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Hello, my name is Charles Goode and I’m an electrical engineering major at Kennesaw State University. I’m here to tell you about Kennesaw Motorsports and to walk you through how I completed my first project on the team with the help of [Cody](https://sourcegraph.com/cody). 

## Kennesaw Motorsports

[Kennesaw Motorsports](https://www.ksumotorsports.com/) is a college competition team where students from various majors come together with one mission: _to build race cars_. Each year, we build two formula-style vehicles to compete in a competition held by the Society of Automotive Engineers, known as [Formula SAE](https://en.wikipedia.org/wiki/Formula_SAE). Each team is evaluated by industry professionals on presentation, design, cost, and performance to give future engineers the experience they can’t get in the classroom.

![](https://storage.googleapis.com/sourcegraph-assets/blog/leveraging-cody-to-implement-gps-data-logging/image_001.jpeg)

## My First Project with Cody

I will walk you through how Cody helped me complete my first project on the team. Going into this project, I needed more experience writing code and messing with microcontrollers and electronics. Despite my situation, I was able to complete my project quickly with the help of Cody. 

The project aims to implement a GPS data logger in our race car. We collect a ridiculous amount of data throughout our system, and the ability to plot the position of our car as it goes around a track can help us perform much better data analysis.

Hardware Involved 

* [Teensy 4.0 Microcontroller](https://www.pjrc.com/store/teensy40_pins.html)
* [Adafruit Ultimate GPS Breakout Board](https://www.adafruit.com/product/746)
* [Adafruit Micro SD Breakout Board](https://www.adafruit.com/product/254)

First, I start with the Teensy and the GPS. Before I mess with the Micro SD card or get into plotting, I want to make sure the GPS will work correctly.

For prototyping, I am using a breadboard and jumper wires. Below, you'll find the layout of the hardware and wiring instructions.

 
![](https://storage.googleapis.com/sourcegraph-assets/blog/leveraging-cody-to-implement-gps-data-logging/image_002.jpeg)


* 3V to Vin (3V on Teensy to GPS VIN)
* GND to GND
* TX to RX (Pin 8 on Teensy to GPS RX)
* RX to TX (Pin 7 on Teensy to GPS TX)

Now everything is wired up correctly, I can ask Cody to write some code for my project.

![](https://storage.googleapis.com/sourcegraph-assets/blog/leveraging-cody-to-implement-gps-data-logging/image_003.png)

_Prompt: Write me some basic code for using an Adafruit Ultimate GPS with a Teensy 4.0_

Cody quickly delivers, and the code runs perfectly once I install the necessary library. As you can see, the serial monitor is now printing the coordinates and letting me know the date, time, and satellite information.

Now that we have our microcontroller and GPS working together, we can add the microSD breakout board. This will allow us to print the data from the GPS in a .CSV file for further analysis. 

Here is the updated hardware layout and additional wiring instructions. 

![](https://storage.googleapis.com/sourcegraph-assets/blog/leveraging-cody-to-implement-gps-data-logging/image_004.jpeg)

* SCK to CLK (Pin 13 on Teensy to microSD CLK)
* MISO to DO (Pin 12 on Teensy to microSD DO)
* MOSI to DI (Pin 11 on Teensy to microSD DI)
* CS to CS (Pin 10 on Teensy to microSD CS)

Now that everything is wired up correctly, I can ask Cody for additional code. This time, I mentioned the microSD breakout board and specifically asked only to send the GPS coordinates to the CSV file.

![](https://storage.googleapis.com/sourcegraph-assets/blog/leveraging-cody-to-implement-gps-data-logging/image_005.png)

_Prompt: Open a CSV file on the SD card and print the GPS coordinates_

Cody quickly tells me which libraries I need and completely rewrites the code to fit my specifications. Once I upload this, the coordinates begin printing without the unnecessary information from before. 

I will now plug the Micro SD card into my computer to confirm it opened the file and correctly formatted the coordinates. 

![](https://storage.googleapis.com/sourcegraph-assets/blog/leveraging-cody-to-implement-gps-data-logging/image_006.png)
 
All the data is formatted correctly, but we need some real data to plot this correctly. The next time we tested one of our cars, I collected some real data from the CSV file. Now that we have the data needed, we must visualize it. There are a few ways to do this, but I picked MATLAB. I cannot do this inside my IDE, but Cody can still be helpful. 
 
![](https://storage.googleapis.com/sourcegraph-assets/blog/leveraging-cody-to-implement-gps-data-logging/image_007.png)

I asked Cody for a MATLAB script, and it was quickly delivered. I went to MATLAB, pasted in the script, and it ran perfectly. Once I input the data from our testing day, it plotted it. Here is the data visualized using the plot function.

![](https://storage.googleapis.com/sourcegraph-assets/blog/leveraging-cody-to-implement-gps-data-logging/image_008.png)

As you can see, Cody was able to help me complete my first project quickly. 

## Favorite command

Cody has many features, but one of the most important features for people trying to learn is the **“Explain Code”** command. 

![](https://storage.googleapis.com/sourcegraph-assets/blog/leveraging-cody-to-implement-gps-data-logging/image_009.png)

With the “Explain Code” command, Cody quickly gives me an in-depth explanation of the code. I am trying to learn from this project, so understanding the code is essential.

Within seconds of my command, Cody gives me an in-depth explanation of how the entire program functions. With this information, I can see exactly how the outcome is achieved and can return to this chat to help me complete similar functions in my next project. 


## Conclusion

A major key to being successful as a team or as a company is making meaningful relationships, and we are thankful to have one with Sourcegraph. We are always looking for ways to grow as a team, and receiving support from a fast-growing company in the Software and AI industry is a major leap in the right direction—big thanks to the team at Sourcegraph for supporting our journey towards innovation and success. 

To learn more about Kennesaw Motorsports, visit our website [here](https://www.ksumotorsports.com/)!

---

Cody can help you code faster, improve your productivity, and unlock new knowledge. Give [Cody](https://sourcegraph.com/cody) a try today!

Charles Goode

Charles Goode, an electrical engineering student at Kennesaw State University, shares his experience using Cody to rapidly implement a GPS data logging system for the university's Formula SAE racing team, Kennesaw Motorsports.

Crossing the Finish Line Faster: Leveraging Cody to Implement GPS Data Logging


<Alert type="secondary">This is a guest blog post from our community. <a href="https://discord.com/servers/sourcegraph-969688426372825169" target="_blank">Join our Discord</a> to meet the author and connect with other developers passionate about Code Search and AI!</Alert>

**Hey there, fellow Digital Nomads!** Craving that perfect blend of beachside cocktails and coding deadlines? Ever wished your hotel room came with a built-in IDE, not just a mini bar? Well, strap on your walking shoes and ditch the laptop, because we're about to unlock the secret to mobile coding freedom: [Termux](https://termux.dev/) and [Cody](/cody).

Think of Termux as your secret Swiss Army knife for Android. It's a Linux shell disguised as an app, giving you access to a whole ecosystem of developer tools, right on your tablet. No more lugging around heavy laptops, just whip out your trusty tablet and get coding under that palm tree. 

But wait, there's more! Termux isn't just a fancy terminal, it's your portal to a full-fledged coding environment. 

Enter Visual Studio Code (VS Code), the lightweight code editor that's like your coding bestie. Imagine VS Code, but shrunk down and living inside Termux, ready to party anywhere you go. Open it in any browser, on any device, and boom – instant coding paradise.

But the real magic spell comes with Cody. Think of Cody as the Obi-Wan Kenobi to your coding Luke Skywalker. Cody autocompletes your code, suggests solutions, and even refactors your messy bits like a coding Yoda. No more staring blankly at the screen, Cody's got your back (and your code's future).

<Figure 
  src="https://storage.googleapis.com/sourcegraph-assets/blog/cody-on-the-road/image1.jpg"
  alt="Cody as the Obi-Wan Kenobi "
  caption="Cody as the Obi-Wan Kenobi "
/>

With Termux, VS Code, and Cody, the world is your office, and every sunrise is a new coding adventure. Ready to level up your mobile coding game? Buckle up, let's dive into the nitty-gritty!

## Unleashing Your Inner Coding Nomad - Installing Termux, VS Code Web, and Cody

Alright, time to roll up our sleeves and get our hands dirty! We're about to transform your tablet into a coding powerhouse, and trust me, it's easier than wrangling a stubborn Wi-Fi hotspot.

First up, Termux. Ditch the Google Play Store, we're going rogue with f-droid, the independent app haven. Here's the link: [Termux (F-Droid)](https://f-droid.org/en/packages/com.termux/) Just tap, install, and boom – instant Linux playground!

Next up, VS Code Web. It's like magic, but without the capes and weird spells. Just a few quick commands in Termux, and voila – you'll have a web-based coding playground ready to rock.

Here's the quick and dirty guide for the installation wizards among you:

```bash
pkg install tur-repo
pkg update
pkg upgrade -y
pkg install -y \
  build-essential \
  binutils \
  pkg-config \
  python3 \
  nodejs-lts
node -v
pkg install code-server
```

Now, unleash the coding beast with one final command: `code-server .`

Open up your browser and navigate to [localhost:8080](http://127.0.0.1:8080) and **Boom!** You've officially got VS Code Web up and running, ready to code like there's no tomorrow even if you're coding on a beach in Bali. Visit the [coder docs](https://coder.com/docs/code-server/latest/termux#installation) for more information and issues.

Finally, the pièce de résistance: Cody, your AI coding sidekick. Download the extension from within VS Code Web extensions tab.


<Figure 
  src="https://storage.googleapis.com/sourcegraph-assets/blog/cody-on-the-road/image2.jpg"
  alt="Screenshot of my tablet with Termux on the left and VS Code with Cody on the right"
  caption="Screenshot of my tablet with Termux on the left and VS Code with Cody on the right"
/>

## Cody: Your AI-powered assistant for Android development

Remember that moment when Luke Skywalker first met Obi-Wan Kenobi? That "whoah, this coding life just got a whole lot cooler" feeling? Well, Cody's basically his coding equivalent – your AI sidekick who elevates your Android development game to Jedi-level. No more staring blankly at the screen, struggling with syntax or logic. Cody's got your back.

Whether you're building a simple game or a complex social media app, Cody is your secret weapon. 

Here's how Cody can help you build Android apps:

* **Android-specific suggestions:** Cody knows all the ins and outs, offering suggestions for activities, layouts, and even resource files.
* **Help with complex tasks:** Need to implement a custom view or handle complex logic? Cody's got your back, providing code snippets and examples to get you started.
* **Speed up your development:** Forget wasting time on boilerplate code or debugging simple errors. Cody takes care of those pesky details, letting you focus on the big picture.

The possibilities are endless, nomads! With Cody, you can build games, productivity apps, social media platforms – anything your nomadic heart desires. And you can do it all from the comfort of your hammock, beach towel, or even that questionable air mattress you found in a hostel in Laos.

With Cody by your side, you'll be coding Android apps like a pro, no matter where your nomadic adventures take you.


<Figure 
  src="https://storage.googleapis.com/sourcegraph-assets/blog/cody-on-the-road/image3.jpg"
  alt="Codying on the beach"
  caption="Codying on the beach"
/>

## Bonus: Nomad coding hacks and fun facts

Alright digital nomads, we've unlocked the secrets of coding on the go with Termux, VS Code Web, and Cody. But the adventure doesn't stop there! This bonus chapter is your one-stop shop for optimizing your nomadic coding experience and uncovering some fun facts to fuel your wanderlust.

### Termux tweaks for the tech-savvy Nomad

* **Power up your shell:** Don't settle for the default bash shell! Install [zsh](https://www.zsh.org/) for a more customizable and powerful experience with plugins, themes, and autocompletion.
* **Keyboard ninja moves:** Master essential keyboard shortcuts for faster navigation and editing. Learn to copy, paste, and yank like a pro!
* **Remote access:** Manage your Termux environment from anywhere! Set up SSH access to remotely connect and tinker with your code from another device.

### Fun facts to fuel your Nomadic coding soul

* **Digital Nomad boom:** The number of digital nomads globally is expected to reach 1 billion by 2035! That's a whole lot of laptops on beaches (and hopefully, more Termux tablets!).
* **Fastest Wi-Fi:** South Korea holds the crown for the world's fastest average internet speeds. Get your coding fix in Seoul's bustling cafes or serene temples.
* **Digital Nomad visa paradise:** Estonia offers a special "digital nomad visa" for remote workers, making it a haven for location-independent coders. Imagine coding from a medieval town like Tallinn!

---

Cody can help you code faster, improve your productivity, and unlock new knowledge. Give [Cody](https://sourcegraph.com/cody) a try today!

Tino Wening

An informal guide for digital nomads, showcasing how Termux and Cody turn your tablet into a beach-friendly coding hub. Ditch the laptop for a lightweight setup with Termux's Linux shell, Visual Studio Code's web interface, and Cody.

Coding on the road with Android and Cody


<Alert type="secondary">This is a guest blog post from our community. <a href="https://discord.com/servers/sourcegraph-969688426372825169" target="_blank">Join our Discord</a> to meet the author and connect with other developers passionate about Code Search and AI!</Alert>

---

## Friends, Coders, Netizens, lend me your snippets!


To start with, let's talk about the significance of Custom Commands within the realm of programming and automation. Commands play an important role by giving you the ability to define specific actions for your needs, saving you time. Consider scenarios like utilizing Cody to insert specific types of comments, code editing, or even language translation for entire files. In even more simplistic terms, they let you make a button that does a thing, then you can click that button to do that thing an unlimited amount of times without having to type anything again!  Sound good? I bet it does...so let's talk about it in the context of our main man Cody.

Cody makes it easy to create and integrate custom commands into your workflow.

In essence, Custom Commands serve as the virtuosos of your coding orchestra, ensuring a harmonious and efficient coding experience.


## Using Commands with Cody

With Commands, you can effortlessly create and execute reusable prompts without ever opening the Chat sidebar. This improvement streamlines your workflow and unlocks a new level of productivity.

**An example command JSON that would sit comfortably in your cody.json file:**

```json
    "algorithm-analysis": {
      "description": "algorithm-analysis",
      "prompt": "Analyze and document the algorithms used in the code, detailing their efficiency and how they achieve their intended purpose.",
      "context": {
        "codebase": true,
        "selection": true,
        "currentFile": true
      }
```

This would then be called in your editor with a slash command: `/algorithm-analysis`


## Getting started with Custom Commands

![](https://storage.googleapis.com/sourcegraph-assets/blog/codyception-coding-cody-tools-with-cody-001.png)

You can [create Custom Commands](https://sourcegraph.com/docs/cody/capabilities/commands#custom-commands) directly in Visual Studio Code. But, to make your life easier with getting started with Custom Commands, I [created a handy little tool](https://cody.kynlo.co.uk) that you can use to generate custom commands!

![](https://storage.googleapis.com/sourcegraph-assets/blog/codyception-coding-cody-tools-with-cody-002.png)

Now, nobody is forcing you to use my little tool, and you are absolutely free to go create these manually!  There's [highly detailed documentation](https://sourcegraph.com/notebooks/Tm90ZWJvb2s6MzA1NQ==#custom-commands-194e6b3f-f682-475f-9c66-cfcc84d05c66) written by the amazing [beatrix](https://twitter.com/3eatrix), for those who want to dive even deeper into all of that beautiful behind-the-scenes code!


## Examples of time-saving commands

![](https://storage.googleapis.com/sourcegraph-assets/blog/codyception-coding-cody-tools-with-cody-003.png)

```json
    "implement-code-localization-support": {
      "description": "implement-code-localization-support",
      "prompt": "Implement code localization support in the current project, enabling adaptation to different languages and cultural preferences.",
      "context": {
        "codebase": true
      }
    },
    "check-code-code-smells": {
      "description": "check-code-code-smells",
      "prompt": "Check and identify code smells in the current project, suggesting refactoring for improved code quality.",
      "context": {
        "codebase": true
      }
    },
    "evaluate-code-external-apis": {
      "description": "evaluate-code-external-apis",
      "prompt": "Evaluate and report on the usage and reliability of external APIs in the current project, suggesting updates or replacements.",
      "context": {
        "codebase": true
      }
    },
    "implement-code-database-indexing": {
      "description": "implement-code-database-indexing",
      "prompt": "Implement code database indexing strategies in the current project, optimizing data retrieval and query performance.",
      "context": {
        "codebase": true
      }
```

## The cody.json file: tailoring commands to your needs

Customizing commands is made easy with the `cody.json` file. Here's how you can leverage it:

### Project-specific commands

Create `cody.json` in the `.vscode` directory of your project to make commands accessible only in that workspace. Cody will have access to these custom commands when working on the project.

### Global commands

Create a new `cody.json` file in the `.vscode` directory of your home directory for commands accessible across multiple projects. Cody will have access to these global custom commands in any workspace.

### Workspace vs. user commands

Understanding the scope of your custom commands is essential:

- `cody.json` in a project's `.vscode` folder: Commands are available only in that workspace.
- `cody.json` in the home `.vscode` folder: Commands are available globally across all workspaces.

This flexibility allows you to organize project-specific commands separately from reusable commands which are accessible globally, enhancing your customization capabilities with Cody.

### Running commands made simple
Executing commands is a breeze with these options:

- Type / in the chat box and select your desired command from the pop-up list.

- Use ctrl+shift+v (cmd+shift+v on macOS) anywhere in your document to open the Command Menu, and just like magic, you can select and run commands without the chat sidebar.

- Right-click on selected code to open the Cody context menu and choose a command.

- Search for >Cody: Commands Menu in your Command Palette to access the Command Menu.

## Conclusion

Cody swiftly became my favorite AI Coding Assistant, thanks to the arsenal of available models, especially GPT-4 Turbo, and the stellar Cody Pro features. The fantastic team and vibrant community, especially on Discord, set Cody apart. Unmatched support and lightning-fast bug fixes and feature additions make Cody a coding gem.

I hope this glimpse into Cody and the enchantment of Custom Commands sparks your curiosity. Now that you're deep into this post, you're probably itching to try these methods and commands yourself! [Try Cody today](https://cody.dev) for yourself. 

Finally, why not [join us on Discord](https://discord.com/servers/sourcegraph-969688426372825169) and share some of your creations with us!

With that, I bid you farewell!


Kynlo Akari

This post with teach you how Custom Commands in Cody can simplify your coding process by automating repetitive tasks, saving you time and effort.

Codyception: coding Cody tools with Cody for coding with Cody


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React is a popular frontend library used for building interactive user interfaces. React is a common choice for many organizations. 

In this tutorial, we will build a React app that when given a keyword will generate tweets using GPT-3 . We will use [Cody](https://sourcegraph.com/cody) as our AI assistant, and learn about five tips to enhance our React development experience with AI.

## Prerequisites

1. [Node.js](https://nodejs.org/en) installed on your machine
2. Basic knowledge of developing web apps using React
3. TypeScript (optional)
4. An [OpenAI API key](https://platform.openai.com/docs/api-reference). 
5. [Cody](https://sourcegraph.com/docs/cody#getting-started) AI assitant installed in your editor. 

## Cody overview

Cody is a coding AI assistant developed by Sourcegraph which has the complete context of your codebase, and can provide context aware answers. Cody has many features like chat to answer any questions, provides usefel code completions (code autocomplete), commands, and more. In this tutorial, we will be using many of these features to help build our app effectively.

## Top 5 tips for using Cody with React

### 1. Add enough context

The first tip while using Cody to keep in mind is always to provide the required context, which is info about the coding question or the bug, to get a helpful response. Cody uses three types of context to give the result keyword context, graph context and the codebase context. Codebase context is used by Cody when the repository is indexed, while in another case, the keyword context is used. For this project, all of the responses provided by Cody will be using the keyword context.

Let's see a few examples of Cody's input prompt, how to provide enough context and build the search bar for our tweet generator app.

The first question I asked Cody is: `I want to build a React app using GPT-4, which can generate the tweet content for me to post on Twitter. Tell me how to begin with this app and how I can develop it in the best possible way.`

<table>
  <tr>
    <td><img src="https://storage.googleapis.com/sourcegraph-assets/blog/blog-react-cody-tip-images/prompt_1_1.jpg" width="280" height="320" /></td>
    <td><img src="https://storage.googleapis.com/sourcegraph-assets/blog/blog-react-cody-tip-images/prompt_1_2.jpg" width="280" height="320" /></td>
  </tr>
 </table>

Let's break down this prompt and understand how it has enough context for the answer.
1. Libraries info is mentioned
2. Application details are mentioned
3. The question is clearly asked

You can see that all the required context is mentioned, so it gave us the proper result by telling about the starter point of the application as how to use `GPT-4` from the `openai` npm package, and the other details to keep in mind. It also mentioned the testing, and the deployment method one can follow to deploy the application.

What if the same question is asked without providing enough context? Let's see the result with this question: `I want to develop a React app to generate tweet content. Tell how to develop`

<table>
  <tr>
    <td><img src="https://storage.googleapis.com/sourcegraph-assets/blog/blog-react-cody-tip-images/prompt_2_1.jpg" width="280" height="320" /></td>
    <td><img src="https://storage.googleapis.com/sourcegraph-assets/blog/blog-react-cody-tip-images/prompt_2_2.jpg" width="280" height="320" /></td>
  </tr>
 </table>

You can see that it responded but it could be better so further extra steps would be required to get the desired result.

You can see in the above examples how providing enough context with the prompt can result in a better response from Cody. Let's now build the search bar for this application, which would accept comma-separated keywords for generating the tweet content and the app UI.

I asked Cody first about the UI components I needed to develop for this app, and looking at the results, it provided a helpful response.

<table>
  <tr>
    <td><img src="https://storage.googleapis.com/sourcegraph-assets/blog/blog-react-cody-tip-images/input_prompt_3.jpg" width="280" height="320" /></td>
  </tr>
 </table>

 You can find the code for each UI component [here](https://github.com/deepak2431/tweets-generator/tree/main/src/components).

Next, I asked about how to build the search input box along with a submit button. Cody provided me with the code snippets of the state to be used, the different UI components and the handler function. So, definitely a good job here too!

<table>
  <tr>
    <td><img src="https://storage.googleapis.com/sourcegraph-assets/blog/blog-react-cody-tip-images/prompt_4_1.jpg" width="280" height="320" /></td>
    <td><img src="https://storage.googleapis.com/sourcegraph-assets/blog/blog-react-cody-tip-images/prompt_4_2.jpg" width="280" height="320" /></td>
  </tr>
 </table>

One thing to notice here is that now, for the subsequent prompt input, we are just using `this app`, and it has the context of the app. This is because whenever Cody answers a question, it considers the previous input of the same chat as a context, too.

The `Home.tsx` code till now would look like this:

```typescript

import React, { useState } from "react";

import SubmitButton from "./components/SubmitButton";
import Footer from "./components/Footer";
import Header from "./components/Header";
import SearchInput from "./components/SearchInput";

const Home = () => {
  const [keywords, setKeywords] = useState("");

  const handleInputChange = (e: React.ChangeEvent<HTMLInputElement>) => {
    setKeywords(e.target.value);
  };

  const handleInputSubmit = () => {
    console.log(keywords);
  };

  return (
    <div className="home">
      <Header />
      <div className="content">
        <h2>Create Viral Tweet Content With Keywords</h2>
      </div>
      <div className="input_container">
        <SearchInput
          placeHolder="Enter Keywords"
          value={keywords}
          handleChange={handleInputChange}
        />
        <SubmitButton
          buttonText="Generate Tweet"
          handleClick={handleInputSubmit}
        />
      </div>
      <Footer />
    </div>
  );
};

export default Home;
```

### 2. Input clear prompts

The second tip is that whenever you use Cody, constantly input clear and concise prompts. Let's look into some example prompts that we will use with our app to make this clear. 

I input Cody this prompt: `I want to use the keywords from the input to generate the Tweet content. Write me the code for it.`

<table>
  <tr>
    <td><img src="https://storage.googleapis.com/sourcegraph-assets/blog/blog-react-cody-tip-images/prompt_5_1.jpg" width="280" height="320" /></td>
    <td><img src="https://storage.googleapis.com/sourcegraph-assets/blog/blog-react-cody-tip-images/prompt_5_2.jpg" width="280" height="320" /></td>
  </tr>
 </table>

You can see that it was not able to generate any code as it is asking for more clear prompt details so can provide helpful code which can be used. What if we clarify in the prompt that it should be for the React app?

The updated Cody prompt: `I want to use the keywords from the input to generate the Tweet content using the openai npm package in a React app. Write me the code for it.`

<table>
  <tr>
    <td><img src="https://storage.googleapis.com/sourcegraph-assets/blog/blog-react-cody-tip-images/prompt_6_1.jpg" width="280" height="320" /></td>
    <td><img src="https://storage.googleapis.com/sourcegraph-assets/blog/blog-react-cody-tip-images/prompt_6_2.jpg" width="280" height="320" /></td>
    <td><img src="https://storage.googleapis.com/sourcegraph-assets/blog/blog-react-cody-tip-images/prompt_6_3.jpg" width="280" height="320" /></td>
  </tr>
 </table>

A small changes in prompt made huge difference in the result. The results it gave is mostly perfect which can be used. Awesome job by Cody here! 

This is the `generateTweet` function for our app:

```typescript
  const generateTweet = async() => {

    const response = await openai.chat.completions.create({
      messages: [{ role: 'user', content: `Generate a viral tweet using the keywords: ${keywords}` }],
      model: 'gpt-3.5-turbo',
    })

    const tweet = response.choices[0].message.content;

    console.log(tweet)
  }
```

This is why it is always good to keep in mind that you add as much clarity as you can in the prompts to get a better response. 

So now, we are done with 80% of our app, and we need to render the generated results using the Twitter Card UI component.

### 3. Use commands effectively

The commands is one of the favourite features of Cody for many users because of it being so developer-friendly to use. You can use commands to ask a question, fix a bug, make a refactor or edit any portion of your code.

Let's see if I can use the `/edit` command of Cody to edit the `Home` component to render the generated tweet and also hide the input search box and button when it is being displayed.

Cody prompt for the `/edit` command: Update the Home component to render the TweetCard in the UI below the header. Also, hide the input box and the button using a state when the Tweet is rendered.

<table>
  <tr>
    <td><img src="https://storage.googleapis.com/sourcegraph-assets/blog/blog-react-cody-tip-images/input_prompt_7.gif" width="680" height="520" /></td>
  </tr>
 </table>

You can see in the result how Cody considered the selected code and the prompt to update the code correctly, which will render the tweets. It also added a state variable to hide the search box. 
There are some minor typos which Cody did, such as using the wrong props name of the TweetCard, which can be updated easily. So, it's 98% CORRECT results with a 2% typo. This is how Cody can help you improve your productivity.

You can also use the Cody inline chat feature to ask any question related to any section of the codebase you have.

<table>
  <tr>
    <td><img src="https://storage.googleapis.com/sourcegraph-assets/blog/blog-react-cody-tip-images/input_prompt_8.gif" width="680" height="520" /></td>
  </tr>
 </table>

There is a list of other Cody commands which you can use as per your use case. 

<table>
  <tr>
    <td><img src="https://storage.googleapis.com/sourcegraph-assets/blog/blog-react-cody-tip-images/commands.jpg" width="520" height="430" /></td>
  </tr>
 </table>

What if I want to create any commands of my own? So, the good thing is that's also possible with Cody. You can create your custom commands with your prompts and different configurations in a simple JSON format. You can check more about the custom commands [here](https://docs.sourcegraph.com/cody/custom-commands).

### 4. Wrap up the project

Whenever you're working on a project or a feature, after you finish the development, there are many other things to take care of, like writing documentation, adding tests, completing TODO, etc. Cody can be a great help and save ample time for you.

Let's create a custom command to add tests for our designed app components, which we can use to add all our tests. You can directly use the  `/edit` commands with the prompt, but it's always a good idea that if you are doing something repetitively with Cody, then create a custom command for it.

Custom Command: `/add-test`

```json
{
  "commands": {
    "add-test": {
      "prompt": "Write a unit test for the selected React component.",
      "context": {
        "codebase": true,
        "selection": true,
        "currentDir": false,
        "openTabs": false
      },
      "description": "Add test for the app components."
    }
  }
}
```

This is what a custom-commands JSON looks like after creating one. You can directly use this by adding it to the `cody.json` file.

The `/add-test` command is in action.

<table>
  <tr>
    <td><img src="https://storage.googleapis.com/sourcegraph-assets/blog/blog-react-cody-tip-images/input_prompt_9.gif" width="680" height="520" /></td>
  </tr>
 </table>

Similarly, you can use the `/doc` command to add documentation to any components.

<table>
  <tr>
    <td><img src="https://storage.googleapis.com/sourcegraph-assets/blog/blog-react-cody-tip-images/doc.jpg" width="350" height="320" /></td>
  </tr>
 </table>

You can also use the `/edit` command, which we used before for TODO or the `/ask` command to understand how to resolve this. Cody is always there to help you with any coding task you need!

### 5. Navigate codebases faster

The last tip I would like to discuss is how to navigate any codebase faster with Cody. Assume you developed this application and then passed it to another team or developer to further expand on it. Now, how can the developer understand this codebase faster and get the answers to questions like the components used, how tweets are generated, rendered, etc? For all this, Cody is a savior. 

Let's see this with the [React](https://github.com/facebook/react) library codebase by Facebook, which we have used in this app. 

Question 1: Tell me how the React library is implemented using the current codebase as the context.

<table>
  <tr>
    <td><img src="https://storage.googleapis.com/sourcegraph-assets/blog/blog-react-cody-tip-images/react_1.jpg" width="520" height="380" /></td>
  </tr>
 </table>

You can see that Cody explained the React codebase in brief, as well as the structure of the repo and the algorithms this library uses.

Let's understand more about the DOM diffing algorithm.

Question 2: Tell me more about the DOM diffing algorithms, and explain to me the code of it

<table>
  <tr>
    <td><img src="https://storage.googleapis.com/sourcegraph-assets/blog/blog-react-cody-tip-images/react_2.jpg" width="520" height="380" /></td>
  </tr>
 </table>

Cody explained the diffing algorithm in detail, its time complexity, and the different functions which are used.

You can also look at any function in detail using the prompt `/search {keyword}`.

<table>
  <tr>
    <td><img src="https://storage.googleapis.com/sourcegraph-assets/blog/blog-react-cody-tip-images/prompt_10_1.jpg" width="280" height="320" /></td>
    <td><img src="https://storage.googleapis.com/sourcegraph-assets/blog/blog-react-cody-tip-images/prompt_10_2.jpg" width="280" height="320" /></td>
    <td><img src="https://storage.googleapis.com/sourcegraph-assets/blog/blog-react-cody-tip-images/prompt_10_3.jpg" width="280" height="320" /></td>
  </tr>
 </table>

## Conclusion

In the blog, we saw five different tips for using Cody as an code AI assistant for building React applications. The tips mentioned here can be used with any project, framework, or library. Cody can help you code faster, improve your productivity, and unlock new knowledge. Give [Cody](https://sourcegraph.com/cody) a try today!


Deepak Kumar

Learn how to best leverage Cody in your React based applications.

Top 5 tips for using Cody with React


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In the world of programming, understanding the structure and flow of your code is crucial for maintaining, refactoring, and debugging. While code provides a textual representation of your program's logic, sometimes a visual representation can be more intuitive and helpful. Enter flowcharts – diagrams that map out the flow of execution in your code.

We'll dive into the world of [Mermaid](https://mermaid.js.org) and explore its potential for generating flowcharts. But first, let's address the elephant in the room: what is Mermaid?


### What is Mermaid?

Imagine a tool that enables you to create diagrams and flowcharts using simple text commands. That's the magic of Mermaid, a JavaScript-based charting and diagramming library that transforms plain text into visually appealing diagrams.

Think of it as a modern-day version of cave paintings, where instead of depicting scenes on rock walls, you're using text to paint a picture of your code's structure and flow.


### Using Mermaid with Cody to generate flowcharts

Now that you have a basic understanding of Mermaid, let's explore why combining it with Cody, is a match made in diagramming heaven.

Cody's superpower lies in its ability to analyze code and extract its essential structure. This means that Cody can automatically generate a flowchart of your code, saving you the time and effort of manually creating one.

But here's the twist: Cody doesn't just generate a flowchart; it generates a Mermaid-compatible flowchart. This means that you can seamlessly integrate Cody's flowchart output into Mermaid, allowing you to further customize and refine your diagrams.

In essence, Cody and Mermaid are like two peas in a pod, complementing each other to create a powerful flowcharting duo.


### Benefits of using Cody and Mermaid to generate flowcharts

The benefits of using Cody and Mermaid to generate flowcharts are twofold:

* Save time and effort: Cody automates the flowchart creation process, freeing up your time to focus on more meaningful tasks.

* Enhance understanding: Visualizing your code's structure using flowcharts can significantly improve your understanding of complex codebases.

* Improve communication: Flowcharts serve as excellent communication tools, allowing you to clearly convey code structure to others.

So, if you're looking for a way to streamline your flowcharting process and gain a deeper understanding of your code, Cody and Mermaid are your go-to tools.


### Use Cody to generate a flowchart of a code snippet

Now, let's delve into the exciting task of generating flowcharts from code files. Here we open up a JavaScript file and selecting the following function that serves as an example: 

```js
let a, b, c;
a = 1;
b = 2;
c = a + b;
```

With Cody primed and ready to assist, feed the prompt: 


    > "Hey, Cody, can you generate a flowchart of this selected code snippet in Mermaid format?"

Cody, our trusty AI coding assistant, will spring into action, meticulously analyzing the snippets structure and logic. It will then deftly craft a Mermaid-formatted flowchart, a visual representation of the code's flow and execution path. This flowchart will serve as a valuable tool for grasping the code's inner workings and identifying potential areas for improvement. If you haven't already installed Mermaid, an essential tool for visualizing Mermaid-formatted flowcharts, Cody will provide you with the Mermaid code directly:

```mermaid
graph TD
    A[Start]
    B[a = 1]
    C[b = 2] 
    D[c = a + b]
    E[End]

    A --> B
    B --> C
    C --> D
    D --> E
```

Simply copy and paste this code into a Mermaid viewer, and voilà! The flowchart will magically appear before your eyes, revealing the code's intricate dance in all its glory. A Mermaid viewer and editor can be found at [mermaid.live](https://mermaid.live/). If you are using VS Code you can install [this plugin](https://marketplace.visualstudio.com/items?itemName=bierner.markdown-mermaid) which adds Mermaid diagram and flowchart support to VS Code's built-in Markdown preview.

This is the generated flowchart:

<Figure
  src="https://storage.googleapis.com/sourcegraph-assets/blog/guest-blog-post-using-cody-and-mermaid-to-generate-flowcharts.png"
  caption="Cody for VS Code generating Mermaid flowcharts"
/>

This seamless integration between Cody and Mermaid empowers you to visualize your code effortlessly, transforming complex logic into a visually intuitive representation. As you navigate the flowchart, you'll gain a deeper understanding of the code's structure and behavior, enabling you to identify potential areas for optimization and refinement.

### Other use cases with Cody and Mermaid

Cody's talents extend far beyond simply generating flowcharts. Together with Mermaid, Cody empowers you to revolutionize your coding workflow, transforming it into a visual symphony of creativity and efficiency.

Imagine the thrill of effortlessly generating UML diagrams, showcasing the intricate relationships between classes and objects in your code. Cody's expertise in understanding code structures seamlessly translates into Mermaid-formatted UML diagrams, clearly visualizing the code's architecture.

Beyond UML diagrams, Cody's versatility shines through in its ability to generate a variety of diagrams, including sequence diagrams, Gantt charts, and even state diagrams. These diagrams serve as invaluable tools for documenting code behavior, process flows, and state transitions, ensuring that your code remains lucid and well-structured.

<Figure
  src="https://storage.googleapis.com/sourcegraph-assets/blog/guest-post-flowchart-cody-gantt.png"
  caption="Cody: create a Gantt diagram of @.../detect-multiline.ts formatted for Mermaid."
/>

So, go ahead and unleash Cody's flowchart-generating prowess, and watch as your code transforms into a masterpiece of visual clarity. Embrace the power of visual storytelling and let your code flow like a well-designed diagram, a testament to your coding mastery.


<hr style={{marginTop:"2rem",marginBottom:"2rem"}} />

To get started with Cody, check it out on [sourcegraph.com](https://sourcegraph.com/cody).


What are the benefits of using Cody and Mermaid to generate flowcharts? Guest author, Tino Wening, gives a visual guide to understanding your codebase.

Flowcharting Your Code: A Visual Guide to Understanding Your Codebase


<Alert type="secondary">This is a guest blog post from our community. <a href="https://discord.com/servers/sourcegraph-969688426372825169" target="_blank">Join our Discord</a> to meet the author and connect with other developers passionate about Code Search and AI!</Alert>

_Ever thought about climbing Mount Everest in flip-flops?_ That’s how I felt diving into _PHP_ for the first time.

A few weeks ago, a professional endeavor landed on my desk: creating a printing API. The goal was to build a library in PHP that lets developers easily play with commands to scan and print documents programmatically. With an already functional Python API version in my arsenal, I was initially optimistic about the task. Translating the code to another language, PHP in this case, seemed like a straight path. However, the catch was my complete lack of familiarity with PHP, making the experience seem like a herculean effort at first glance. To add to the challenge, I imposed a time constraint on myself. So now I had to learn a new language and build a full-blown project that I could share with the world.

This task entailed a couple of different things

* Building and publishing an entire PHP package with easy install instructions and simple commands to print/scan documents while cleanly hiding all the API complexity.
* Build comprehensive documentation for those keen on exploring edge cases.
* Add decent testing/error handling to maintain code and take future developments into account.

Ultimately, my goal was to offer this functionality to PHP users

<Figure
  src="https://storage.googleapis.com/sourcegraph-assets/blog/guest-post-arafat-khan-php-python/image_1.png"
  caption="Rough Outline of the Print API"
/>

While I knew that I knew nothing about PHP, I also knew that I had help that I could rely on. I started with the only two things that I had at the time:

* My fully functional Python repo to use as a reference
* [Cody](https://about.sourcegraph.com/cody) -> A code AI assistant from Sourcegraph

I fired up my Python repo in VS Code and started out with some basic PHP setup questions to help me out with the setup steps of the PHP project

<Figure
  src="https://storage.googleapis.com/sourcegraph-assets/blog/guest-post-arafat-khan-php-python/image_2.png"
  caption="My Python project in VS Code with Cody’s chat panel"
/>

These are just silly PHP 1O1 questions but for someone who didn’t have the slightest clue of what they were doing, this was such a timesaver. It’s almost as if I had a mid-level PHP Developer sitting next to me who was guiding me through the whole process. After answering my questions, it would also give me a couple of different follow-up questions that it already knew I would ask. That was surprisingly helpful. I would literally just press the button to ask the pre-decided follow-up questions and those questions would help me gain a better understanding of the flow.        

<Figure
  src="https://storage.googleapis.com/sourcegraph-assets/blog/guest-post-arafat-khan-php-python-image-3-full-035250.png"
  caption="Basic PHP Project Setup Questions"
/>

Drawing from my Python background, I communicated with Cody using Python analogies. This approach worked wonders. Cody translated my Python-centered queries into PHP solutions, making the learning curve smoother.

In a pre-Cody era, I would have crawled the Internet, sifted through hours-long tutorials, and juggled between numerous blogs to get a grip on PHP’s basics. While video tutorials serve their purpose, isn’t it more efficient to have a guide that delivers instant answers tailored to your needs?

This is exactly where Cody came in. It would give me a lot of foundational advice that I needed to setup my repo and understand the basics of PHP. I could frame my questions in any way that I wanted, and I would get useful answers to just the EXACT thing I needed at the moment. In just a few hours, with Cody’s assistance, I set up a basic “Hello World” package complete with tests and documentation.

The foundation of the PHP package was laid, and all that remained was to build the actual API upon it. The real challenge lay in replicating the API’s intricate structure, a fusion of authorization, settings, and upload requests, all harmoniously functioning within OOP’s realm. The rough outline of the API looks like this


<Figure
  src="https://storage.googleapis.com/sourcegraph-assets/blog/guest-post-arafat-khan-php-python/image_4.png"
  caption="Flow for Print API"
/>

To do the real building, I started out with the root of the entire codebase, which is the Auth class(This class will authorize all the calls going to the Print API and validate them). The goal was very simple, select my Python code and ask Cody to generate a basic PHP scaffolding for it.

<YouTube
  title="Cody select and explain" 
  id="N-9QUjpv1qY"
  showTitle={true}
/>


You can see how easy it is to select some Python code and ask Cody to convert it. This gives us a good starting point for the outline of the class that we are looking for.

```php
<?php

class AuthCtx {

  // Properties
  private $_baseUrl;
  private $_printerEmail; 
  private $_clientId;
  private $_clientSecret;

  private $_expiresAt;
  private $_accessToken = '';
  private $_refreshToken = '';
  private $_subjectId = '';

  // Constructor
  public function __construct($baseUrl, $printerEmail, $clientId, $clientSecret) {
    
    // Initialize properties
    $this->_baseUrl = $baseUrl;
    $this->_printerEmail = $printerEmail;
    $this->_clientId = $clientId;
    $this->_clientSecret = $clientSecret;

    // Call auth method
    $this->_auth();

  }

  // Authenticate or re-authenticate
  private function _auth() {

    // Check token expiration
    if ($this->_expiresAt > time()) {
      return;
    }  

    // API endpoint
    $method = 'POST';
    $path = '/api/1/printing/oauth2/auth/token?subject=printer';
    
    // Headers
    $headers = array(
      'Content-Type' => 'application/x-www-form-urlencoded'
    );

    // Authentication
    $auth = array($this->_clientId, $this->_clientSecret);

    // Request data
    if ($this->_accessToken == '') {
      $data = array(
         'grant_type' => 'password',
         'username' => $this->_printerEmail,
         'password' => ''
      );
    } else {
      $data = array(
        'grant_type' => 'refresh_token',
        'refresh_token' => $this->_refreshToken
      );
    }

    // Make API request
    try {
      $body = $this->send($method, $path, $data, $headers, $auth);
    } catch (Exception $e) {
      throw new Exception('Authentication error: ' . $e->getMessage());
    }

    // Handle errors
    if (isset($body['error'])) {
      throw new Exception('Authentication error: ' . $body['error']);
    }

    // First time, get refresh token
    if ($this->_accessToken == '') {
      $this->_refreshToken = $body['refresh_token'];
    }

    // Update tokens
    $this->_expiresAt = time() + $body['expires_in'];
    $this->_accessToken = $body['access_token'];
    $this->_subjectId = $body['subject_id'];

  }

  // Make API request
  public function send($method, $path, $data, $headers, $auth) {
    
    // Re-authenticate if needed
    if (!$auth) {
      $this->_auth(); 
    }

    // Make HTTP request and handle response

  }

}
```

This is a very decent scaffold for the entire Auth class. We have the private/public variables, most of the auth method already implemented, and the outline of the send method. This is a great starting point, I already learned so much about PHP syntax just from this, and now I can build things on top of it. Brick by brick, by selecting segments of my Python code, I can understand them and then re-create them in PHP, too. I kept doing the iterative work of selecting different parts of my Python code and asking more questions on it to piece it all together to make my PHP code.


Obviously, we are dealing with LLMs here, so nothing is perfect. Occasionally, Cody would hallucinate and give me an imperfect response, and in those cases, I would have to use my programming background and some common sense to tweak the code. I would also try my best to write as much code myself because that teaches you the intricacies of the syntax and the common mistakes that people tend to make, and it’s generally a great learning experience.


Cody can be surprisingly helpful even when you just want to write all the code yourself. One of the classic mistakes while writing PHP as a newbie is missing the `$` sign before variables, as shown below. With Cody, it’s easy just to ask it to fix them for you. It’s much better than the natural IntelliSense fixes that come with VS Code by default. I appreciate this feature as it saves me from tedious single-character bug fixes.

<Figure
  src="https://storage.googleapis.com/sourcegraph-assets/blog/guest-post-arafat-khan-php-python/guest-post-arafat-khan-php-python-image-5-full.png"
  caption="PHP Variable fixes with Cody"
/>

The other thing that I really enjoyed was the improved speed of coding.

Typically, the coding process goes like this:

1. Conceptualize
2. Draft imperfect code
3. Refine
4. Comment
    
However, with Cody, I experienced a much faster approach:

1. Conceptualize
2. Comment
3. Generate near-perfect code
4. Refine

<Figure
  src="https://storage.googleapis.com/sourcegraph-assets/blog/guest-post-arafat-khan-php-python/image_6.jpg"
  caption="Couldn’t resist adding an AI image to show the contrast of two Coders"
/>

Sometimes, I would just describe what the function is “supposed” to do in a comment, and just like magic, Cody would write it for me.
            <div>
                <YouTube title="Autocomplete with Cody" id="UdMCERz9hcY" />
            </div>
The above example is Cody’s autocomplete feature. It works surprisingly well for all kinds of code completion tasks, especially when your repo already has a reasonable amount of code to give it context. This autocomplete system is grounded in a complex foundation, and for those interested in its intricacies, you can delve deeper [here](https://about.sourcegraph.com/blog/the-lifecycle-of-a-code-ai-completion).

All these features, such as _autocomplete, explanation, code fixes, and testing,_ made my job as a programmer a lot easier. I was able to build the building blocks of my code, and then, inch by inch, I was getting closer to completing the entire project. As I was building more and more of this codebase, a question that crossed my mind was:

## Why use Cody when you have Chat GPT-4?

I like the speed and convenience of Cody, as well as the ability to use it directly in VS Code, but there is another major reason why I prefer Cody. Cody can answer questions about your entire codebase and sift through all the different parts to find the most relevant information pertaining to your question. It uses the [Claude 100K model](https://www.anthropic.com/index/100k-context-windows) (soon to be the [200K model](https://www.anthropic.com/index/claude-2-1)) so it has the capacity to fit in so much more context than my copy-pasting hacks ever could. Take, for example, this question

<Figure
  src="https://storage.googleapis.com/sourcegraph-assets/blog/guest-post-arafat-khan-php-python/image_7.png"
/>

I asked a question here that touches 11 different files, each of which would easily exceed the context window of ChatGPT (Never mind the copy-pasting hassle). It sifts through all the files and shows me how they are interconnected and what calls touch which parts. This to me, is the most important feature of Cody: the ability to answer questions that are deeply tangled in the complexity of the codebase. It helps me answer questions that I simply can’t find through a simple copy-paste because the real problem is that sometimes _I don’t even know where to look_ when I am dealing with very large codebases. And here's the best part: Cody is soon going to support GPT-4.5-Turbo(So all the Open AI fans still get to stay with their favourite models)


## Conclusion


   Cody has made me faster and improved my dev workflow so much that I don’t think I will be coding without it in the future. The daunting Everest climb of learning PHP began to feel more like a stroll in the park. Every obstacle I encountered was promptly addressed, either by directly consulting Cody or by utilizing the resources and code suggestions it provided.


    In a mere span of three days, I not only developed a functional PHP API for Printing but also deepened my PHP understanding. This journey underscored the potential of efficient, transformative learning with the right tools.


    You can check the codebase yourself

* [Python Code](https://github.com/arafatkatze/epson-connect-python) — [Python Docs](https://epson-connect-api.readthedocs.io/en/main/?badge=latest)
* [PHP Code](https://github.com/arafatkatze/epson-connect-php) —[ PHP Docs](https://arafatkatze.github.io/epson-connect-php/packages/Epsonconnectphp-Epson.html)
* [Print API Blog](https://medium.com/@Arafatkatze/epson-connect-api-for-developers-a-comprehensive-guide-ae639a80eefb)

    To anyone embarking on a similar journey or facing the challenge of diving into unfamiliar territory, I would say that AI tools in 2023 are like the Internet in the late 90s. You can deny its existence and impact all you wish, but there is very soon going to be a future that’s so deeply entwined with AI that you won't be able to think of a life without it. I strongly recommend people try out AI coding assistants. There’s quite a few out there, but Cody is the best one.


<hr style={{marginTop:"2rem",marginBottom:"2rem"}} />

To get started with Cody, check it out on [sourcegraph.com](https://about.sourcegraph.com/cody).


Arafat Khan

When tasked with creating a printing API in PHP despite having zero experience, Arafat Khan leveraged Cody to transform what felt like an Everest climb into a swift 3 day project that resulted in a fully functioning API.

Welcome to the Sourcegraph Community

Our community is driven by a shared passion for open source and developer productivity, fueled by the power of AI tools & code search.

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