Plain Editor vs. AI IDE
A plain editor is like a sheet of paper: you write a stroke, it shows a stroke—it does nothing on its own. An AI IDE is like having a colleague sitting next to you—it can read your whole project and directly edit files.
Representative tools: Cursor (an editor with AI) and Claude Code (an Agent that works in the terminal). At their core they're the same: understand the whole project + can edit code + can run commands.
Why It Can Actually Edit Your Project
The key is that it can see the context: not just the line your cursor is on, but the relevant files. So when you say "make the login page button blue," it can find that file on its own.
你：把登录按钮的文字从“登入”改成“登录”
AI IDE：
1. 搜索项目里的“登入”
2. 定位到 login.vue
3. 改好并展示 diff 给你确认Once It's Done, Don't Trust It Right Away
The AI IDE will finish very confidently. But it may edit wrong, too much, or miss things. So the first thing after it's done is always: read the diff (the change comparison) yourself, then run the program.
自测 · 学完检查一下
想真正动手做题、记进度、攒连胜？到互动课里练。
What's the most core difference between an AI IDE and a plain editor?
答案：It can understand the whole project and edit code itself
A plain editor only shows what you type; an AI IDE can understand the project context and proactively modify files.
Judge: in a plain notepad, the editor will locate and modify the relevant files for you on its own.
答案：False
A plain editor doesn't understand the project or modify files on its own—that's exactly the extra ability an AI IDE adds.
Judge: "unify all instances of '登入' into '登录' across the project"—this kind of work is well suited to hand directly to an AI IDE.
答案：Well suited
This is a clearly scoped change that can be located by a project-wide search—exactly an AI IDE's strength.
Which instruction is best suited to hand straight to an AI IDE?
答案："Change the homepage's request timeout from 5 seconds to 10 seconds"
A specific goal with a clear scope is what lets an AI IDE locate and modify accurately.
After the AI IDE edits the code, the first thing to do is look over the change comparison, i.e. the ___.
答案：diff
Reading the diff lets you catch where it over-edited, under-edited, or got it wrong.
Judge: when the AI IDE says "fixed," you can take it as really fixed and skip verifying yourself.
答案：False
It'll be confident but may be wrong; reading the diff and running the program to verify is always your responsibility.