Compose

升级 Docusaurus 至最新版本

const add = x => x + 10;
const mul = x => x * 10;

const compose = (...fns) => {
    // return args => fns.reduceRight((val, fn) => {
    //     return fn(val)
    // }, args);
    return args => {
        return fns.reduce((fn1, fn2) => {
            // return fn2(fn1(args))
            console.log(fn1)
            return fn1(fn2(args))
        })
    }
}

console.log(compose(mul, add)(10));

const pipe = (val, ...fns) => {
    return fns.reduce((val, fn) => {
        return fn(val);
    }, val)
}
// console.log(pipe(10, add, mul))
// =================================================================
function f1(arg) {
    console.log("f1", arg);
    return arg;
}

function f2(arg) {
    console.log("f2", arg);
    return arg;
}

function f3(arg) {
    console.log("f3", arg);
    return arg;
}

function compose1(...funcs) {
    if (funcs.length === 0) {
        return arg => arg;
    }

    if (funcs.length === 1) {
        return funcs[0];
    }

    return funcs.reduce((a, b) => {
        console.log(a,b, 33)
        return (...args) => a(b(...args));
    });
}

// console.log(compose1(), 9)
// let res = compose1(f1, f2, f3)("omg"); //f1(f2(f3("omg")));
// console.log("res", res);