Run results for: compose versus array

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/140.0.0.0 Safari/537.36

Browser: Chrome 140

Operating system: Windows

Device Platform: Desktop

Date tested: 7 months ago

Test name	Executions per second
array	8821102.0 Ops/sec
compose	5659973.5 Ops/sec

Script Preparation code:

function generateFunction () {

    let body = "x";

    body += (Math.random () > 0.5) ? "*" : "+";
            
    body += Math.floor (1 + Math.random () * 100);

    if (Math.random () > 0.75)
        body = "Math.min (" + body + "," + Math.floor (1 + Math.random () * 100) + ")"
        
    return new Function ("x", "return " + body + ";");
}

const compose = (f, g) => x => g(f(x));

const funs = [generateFunction ()];
let fun = funs[0];
console.log ("i", 0, fun);
for (let i = 1 ; i < 20 ; i++) {

    const nfun = generateFunction ();
    console.log ("i", i, nfun);
    funs.push (nfun);
    fun = compose (nfun, fun);
}

Tests:

array
let result = Math.floor (Math.random () * 100); for (let i = funs.length - 1 ; i >= 0 ; i--) result = funs[i] (result);
compose
let result = Math.floor (Math.random () * 100); result = fun (result);