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柯里化函数

const currying = (fn,args = []) => {       let len = fn.length;    return (..._)=>{           let arg = args.concat(_);        if(arg.length < len){               return currying(fn,arg);        }        return fn(...arg);    }};const add = (a, b, c, d, e) => {     return a + b + c + d + e;};let r = currying(add)(1)(2,3)(4,5);console.log(r);

柯里化类型

const types = ['String','Number','Boolean'];let utils = {   }types.forEach(type=>{       utils[`is${     type}`] = currying(isType)(type);})