使用STREAM冒險

Question

var through = require('through2'); 
var stream = through(write, end); 

var tr =function write(buffer,encoding, next) { 
    this.push(buffer.toString().toUpperCase()); 
    next(); 
} 
process.stdin.pipe(through(tr)).pipe(process.stdout); 

我得到錯誤的`through2` module.in nodeschool車間從`process.stdin`將數據轉換爲大寫數據上`process.stdout`

var stream = through(write, end); 
        ^

ReferenceError: write is not defined at Object. (C:\Users\GOTHAMI\stream\transform.js:2:22) at Module._compile (module.js:409:26) at Object.Module._extensions..js (module.js:416:10) at Module.load (module.js:343:32) at Function.Module._load (module.js:300:12) at Function.Module.runMain (module.js:441:10) at startup (node.js:134:18) at node.js:962:3

Answer 1

只要刪除這一行;

var stream = through(write, end);