将 jquery 函数转换为函数式编程函数 [英] Transforming jquery function into functional programming function

问题描述

我是函数式编程的初学者，并且我想用函数式编程范式改造这个jquery函数.

I'm a beginner in functional programming and I want to transform this jquery function with the functional programming paradigm.

我尝试转换这个函数

merge: function( first, second ) {
            var len = +second.length,
                j = 0,
                i = first.length;

            for ( ; j < len; j++ ) {
                first[ i++ ] = second[ j ];
            }

            first.length = i;

            return first;
        }

它只是一个简单的合并函数.
例如，当我调用

It is just a simple merge function.
For example, when I call

merge([0,1,2,3,4],[5,6,7,8,9]);

它产生

[0,1,2,3,4,5,6,7,8,9]

我所做的是

merge: function( first, second ){
    var len = +second.length,
                j = 0,
                i = first.length;
    let modify = x =>{
    let merging =
        j => {
        first[ i++ ] = second[ j ];
        };
    R.map(merging, R.range(0,len))
    return first;
    }
    modify
}

但它不起作用.
我知道我的代码有问题，但我猜不出它在哪里......

But it does not work.
I know something is wrong in my code but I cannot guess where is it...

推荐答案

您也可以简单地使用 ES6 将它们解构成一个新的:

You can also simply destructure them with ES6 into a new one:

console.log([...[0,1,2,3,4], ...[5,6,7,8,9]])

// OR if you really want a pure function

let mergeArrays = (a,b) => [...a, ...b]

console.log(mergeArrays([0,1,2,3,4], [5,6,7,8,9]))

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