题解 | 计数器
计数器
https://www.nowcoder.com/practice/59154c37d06c41b5b0e19b3b26272229
const closure = () => { // 补全代码 let num = 0 return ()=>{ num++ return num } }
计数器
https://www.nowcoder.com/practice/59154c37d06c41b5b0e19b3b26272229
const closure = () => { // 补全代码 let num = 0 return ()=>{ num++ return num } }
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