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什么是元?元是指函数参数的个数,比如一个带有两个参数的函数被称为二元函数
function add(a, b) { return a + b; } // 执行 add 函数,一次传入两个参数即可 add(1, 2) // 3 // 假设有一个 partial 函数可以做到局部应用 var addOne = partial(add, 1); addOne(2) // 3
const partial = (fn, ...restArgs) => { // 默认参数和新传递的参数进行组合,然后调用方法 return (...args) => func(...restArgs, ...args); };
柯里化是将一个多参数函数转换成多个单参数函数,也就是将一个n元函数转换成n个一元函数。
局部应用则是固定一个函数的一个或者多个参数,也就是将一个n元函数转换成一个 n - x 元函数。
// 偏函数是柯里化的子集 function addParti(fn, ...args) { return function(...newArgs) { return fn(...args, ...newArgs); } }
const partial = function() { const fn = Array.prototype.shift.call(arguments); const arg1 = [...arguments]; return function() { const arg2 = [...arg1, ...arguments]; return fn.call(this, ...arg2); } }
function Partial(fn: Function, ...args: any[]) { return (...rest: any[]) => fn(...args, ...rest); }
function partial(func, ...restArgs) { return function(...args) { return func.call(this, ...restArgs, ...args); } }
箭头函数:
function addParti(fn, ...args) { return (...newArgs) => fn(...args, ...newArgs); }
The text was updated successfully, but these errors were encountered:
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什么是元?元是指函数参数的个数,比如一个带有两个参数的函数被称为二元函数
柯里化是将一个多参数函数转换成多个单参数函数,也就是将一个n元函数转换成n个一元函数。
局部应用则是固定一个函数的一个或者多个参数,也就是将一个n元函数转换成一个 n - x 元函数。
箭头函数:
The text was updated successfully, but these errors were encountered: