curry & unCurry function

Function and function difference unCurry curry: 
curry function of: a fixed part of the parameters, receiving a new function returns the remaining parameters, the purpose of narrowing the scope of application, create a more targeted function. 
unCurry of function: broaden the scope of a function to create a wider range of applications. Originally, only the method applies a specific object, and expand to more objects.

 

unCurry Function Reference: https://www.cnblogs.com/pigtail/p/3450852.html    https://juejin.im/post/5b561426518825195f499772#heading-7

方法一：
class Toast{
    constructor(){
        this.prompt=''
    }
    show(){
        console.log(this.prompt);
    }
}
var temObj={prompt:'tem'}
Toast.prototype.show.call(temObj)

function unCurry(fn){
    return function(context){
        var args=Array.prototype.slice(1)||[];
        fn.apply(context,args)
    }
}

var unCurryShow=unCurry(Toast.prototype.show);
unCurryShow(temObj)

方法2
Function.prototype.unCurrying = function(){
    var self = this;
    return function(){
        return Function.prototype.call.apply(self, arguments);
    }
    //return this.call.bind(this);
}

// 使用
var objShow = Toast.prototype.show.unCurrying();
objShow(obj);

 application:

Function.prototype.unCurry=function(){
    return this.call.bind(this)
}
var objPush=Array.prototype.push.unCurry();
var temObj={};
objPush(temObj,'a','b')  

 

var toUpperCase = String.prototype.toUpperCase.unCurrying();
console.log(toUpperCase('avd')); // AVD

function AryUpper(ary) {
    return ary.map(toUpperCase);
}

console.log(AryUpper(['a', 'b', 'c'])); // ["A", "B", "C"]

var call = Function.prototype.call.unCurrying();
function $(id) {
    return this.getElementById(id);
}
var demo = call($, document, 'demo');
console.log(demo);

//Function.prototype.call.call(fn,context,...args)

 

var objToString=Object.prototype.toString.unCurry()
var fn1=function(){}
objToString(objToString)