Claude Code: Anthropic's Intelligent Coding Tool for the Command Line Terminal

General Introduction

Claude Code is the name given to the code by the Anthropic Claude Code is a smart coding tool designed to help developers quickly complete programming tasks in the terminal using natural language commands. It understands the context of the codebase and supports searching for code, editing files, running tests, and even submitting directly to GitHub. as a beta product in research preview, Claude Code offers developers a new collaborative programming experience through deep integration with Anthropic's Claude model. It not only accelerates daily coding tasks, but also optimizes its functionality through interaction with developers, and is currently open-sourced on GitHub, attracting a lot of attention and feedback.

Function List

• Code Search and Understanding: Quickly locate specific files or functions in the code base through natural language queries.
• Document editing: Modify code files directly according to instructions, for example to add functionality or fix problems.
• test run: Support for running test cases to help developers validate code changes.
• GitHub Integration: Seamlessly connect to GitHub to complete code commits, fix bugs, or develop new features.
• Debugging and Refactoring: Assist in identifying code issues and provide refactoring recommendations.
• Test Driven Development (TDD): Support test-driven development process based on generating test code.
• natural language interaction: Operate complex programming tasks with simple language commands.

Using Help

Installation process

Claude Code requires developers to install and configure it in their local environment, here are the detailed installation steps:

1. Preparing the environment
   • Make sure you have Node.js installed on your computer (the recommended version is the latest LTS version). This can be done with the command node -v Check the version.
   • A GitHub account and Anthropic console account are required for the API key.
2. Installation of Claude Code
   • Open a terminal and run the following command to install Claude Code globally:

     npm install -g @anthropic-ai/claude-code
     

   • After installation, Claude Code will be available as a command line tool.
3. Configuring API Keys
   • Log in to the Anthropic console and generate an API key.
   • Run the following command in the terminal to complete the first OAuth authentication:

     claude-code auth
     

   • Follow the prompts to log in to your Anthropic account, and the API key will be automatically saved to your local profile after authorization.
4. Verify Installation
   • Enter the following command to check if the installation was successful:

     claude-code --version
     

   • If the version number is returned, the installation is complete.

How to use

Claude Code runs in the terminal and interacts with developers through natural language commands. Below is a detailed how-to guide for the main features:

Code Search and Understanding

• procedure::
  1. Go to the project directory, for example:

     cd /path/to/your/project
     

  2. Enter natural language commands, for example:

     claude-code "查找所有处理用户登录的函数"
     

  3. Claude Code scans the code base and returns relevant files and code snippets.
• caveat: Ensure that commands are clear and specific and avoid vague descriptions to improve search accuracy.

Document editing

• procedure::
  1. Specify the file to be edited, for example:

     claude-code "在 auth.js 中添加一个新函数 verifyToken"
     

  2. Claude Code generates code based on the instructions and applies it to the file.
  3. Check the generated code and preview the changes using the following command:

     claude-code "显示最近的改动"
     

  4. Confirm that there are no errors and save.
• Featured Functions: Supports batch modifications, for example:

  claude-code "在所有控制器文件中添加日志记录"
  

operational test

• procedure::
  1. Ensure that a testing framework (e.g. Jest, Mocha) is already in the project.
  2. Enter the command to run the test:

     claude-code "运行所有单元测试"
     

  3. To view the results of a test, Claude Code returns details of success or failure.
• Advanced Usage: Generate test cases, for example:

  claude-code "为 utils.js 中的 parseData 函数生成测试代码"
  

GitHub Integration

• procedure::
  1. Make sure the project is associated with a GitHub repository.
  2. Use the following command to submit the code:

     claude-code "提交所有更改到 GitHub，主分支，提交信息为‘修复登录 bug’"
     

  3. Claude Code will execute git add,git commit cap (a poem) git push Operation.
• Featured Functions: Fix GitHub Issues, for example:

  claude-code "根据 issue #123 修复代码并提交"
  

Debugging and Refactoring

• procedure::
  1. Enter the problem when you find it:

     claude-code "调试 auth.js 中登录失败的原因"
     

  2. Claude Code analyzes the code and provides problem descriptions and suggestions for fixes.
  3. Adjust manually as recommended, or by direct order:

     claude-code "按照建议修复 auth.js"
     

• Reconfiguration Example::

  claude-code "将 index.js 中的重复代码提取为单独的函数"
  

Example of operation flow

Suppose you need to add a new feature to your project:

1. Go to the project directory::

cd /my-project

2. Describe the requirements::

claude-code "添加一个处理用户注册的 API 端点"

3. Check the generated code::

• Claude Code will add code to the relevant files, for example routes.jsThe
• importation claude-code "显示改动" Check the code.

4. operational test::

claude-code "为新端点生成测试并运行"

5. Submit to GitHub::

claude-code "提交更改到 GitHub，分支为 feature/registration"

caveat

• Rights Management: The first run may require authorized access to the codebase and GitHub.
• Feedback Submission: If you encounter problems, use the order:

claude-code /bug "Describe the problem"

• data privacy: User feedback is retained for 30 days only and is not used to train models, ensuring code security.

With these steps, developers can quickly get started with Claude Code and utilize its smart features to improve programming efficiency.