Learn with interactive lessons and code examples. Run and test code directly within the . Compile and share code snippets. Track progress and access practical functions for efficient learning and testing.
Create icons and mockups for iOS. Mimic WeChat Moments and image viewer interfaces. Prevent @mentions on Sina Weibo. Imitate Alipay password prompts and post circles. Implement tags, JS interaction, and web page loading.
Take quizzes and challenges to test knowledge in Software, IT, Networks, Electronics, and Information Security. Earn points and CT Coins. Track rankings and achievements. Compete with others to prove IT skills.
Access chat interfaces for multiple AI models including GPT-5, Claude 4.5 Sonnet and Opus, Gemini 2.5 Pro, and Grok. Manage API keys for model access. View and organize chat history within a single application.
