Benchmark: Forked 1: New Object from Reduce vs. ForEach vs. Reduce vs. Reduce w. Object.assign

Forked 1: New Object from Reduce vs. ForEach vs. Reduce vs. Reduce w. Object.assign (version: 1)

Tests the difference in creating new objects by using reduce vs building up an object in a forEach function

Comparing performance of: Populate object via ForEach vs Populate new object via Reduce vs Populate same object via Reduce (don't use ..., that's just silly) vs Let's try Object.assign, since we're here anyway

Created: one year ago by: Registered User

Jump to the latest result

Script Preparation code:

var objects = Array.from(new Array(1000)).map((r, i) => ({
    id: `id-${i}`,
    val: i
}));
// Output should be
// { "id-0": 0, "id-1": 1, ... }

Tests:

Populate object via ForEach
var newMapFE = {}; objects.forEach(o => { newMapFE[o.id] = o.val })
Populate new object via Reduce
objects.reduce((acc, item) => ({...acc, [item.id]: item.val}), {});
Populate same object via Reduce (don't use ..., that's just silly)
objects.reduce((acc, item) => { acc[item.id] = item.val; return acc }, {});
Let's try Object.assign, since we're here anyway
objects.reduce((acc, item) => { Object.assign(acc, { [item.id]: item.val }); return acc }, {});

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Populate object via ForEach
Populate new object via Reduce
Populate same object via Reduce (don't use ..., that's just silly)
Let's try Object.assign, since we're here anyway

Fastest: N/A

Slowest: N/A

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Forked 1: New Object from Reduce vs. ForEach vs. Reduce vs. Reduce w. Object.assign (version: 1)

Tests the difference in creating new objects by using reduce vs building up an object in a forEach function

Comparing performance of: Populate object via ForEach vs Populate new object via Reduce vs Populate same object via Reduce (don't use ..., that's just silly) vs Let's try Object.assign, since we're here anyway

Created: one year ago by: Registered User

Jump to the latest result

Populate object via ForEach

Populate new object via Reduce

Populate same object via Reduce (don't use ..., that's just silly)

Let's try Object.assign, since we're here anyway

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

No previous run results