Benchmark: Spread operator performance

Spread operator performance (version: 0)

Comparing performance of: Concat vs Merge objects mannualy vs Merge objects by Object.assign no clone vs Merge objects by Object.assign vs Merge objects by spread vs Clone object by Object.assign vs Clone object by spread vs Clone array by slice vs Add two fields to object by spread vs Clone array by spread vs Array to arguments by apply vs Array to arguments by spread vs Add two elements to array by push vs Add two elements to array by spread vs Add two elements to array by concat vs Concat by push vs Concat by spread vs Array to arguments by apply manually vs Add two fields to object mannualy

Created: 5 years ago by: Registered User

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Tests:

Concat
['foo', 1, true].concat(['bar', 2, false])
Merge objects mannualy
let object1 = {a: 1, b: 2, c: {d: 4}}; let object2 = {e: 1, f: 2, c: {d: 4}}; object1.e = object2.e; object1.f = object2.f; object1.c = object2.c;
Merge objects by Object.assign no clone
let object1 = {a: 1, b: 2, c: {d: 4}}; let object2 = {e: 1, f: 2, c: {d: 4}}; let result = Object.assign(object1, object2);
Merge objects by Object.assign
let object1 = {a: 1, b: 2, c: {d: 4}}; let object2 = {e: 1, f: 2, c: {d: 4}}; let result = Object.assign({}, object1, object2);
Merge objects by spread
let object1 = {a: 1, b: 2, c: {d: 4}}; let object2 = {e: 1, f: 2, c: {d: 4}}; let result = {...object1, ...object2};
Clone object by Object.assign
let object = {a: 1, b: 2, c: {d: 4}}; let result = Object.assign({}, object);
Clone object by spread
let object = {a: 1, b: 2, c: {d: 4}}; let result = {...object};
Clone array by slice
[1,2,3,4,5,6].slice()
Add two fields to object by spread
let object = {a: 1, b: 2, c: {d: 4}}; let field1 = 10; let field2 = 11; object = {...object, ...{field2, field: field1}}
Clone array by spread
[...[1,2,3,4,5,6]]
Array to arguments by apply
const array = [1,2,3,4,5]; Math.max.apply(null, array)
Array to arguments by spread
const array = [1,2,3,4,5]; Math.max(...array)
Add two elements to array by push
let array1 = ['foo', 1, true]; array1.push(1); array1.push(2);
Add two elements to array by spread
let array1 = ['foo', 1, true]; array1 = [1, 2, ...array1];
Add two elements to array by concat
let array1 = ['foo', 1, true]; array1 = array1.concat([1, 2]);
Concat by push
let result = []; let array1 = ['foo', 1, true]; let array2 = ['bar', 2, false]; array1.forEach(function(e){result.push(e)}) array2.forEach(function(e){result.push(e)})
Concat by spread
[...['foo', 1, true], ...['bar', 2, false]]
Array to arguments by apply manually
const array = [1,2,3,4,5]; Math.max(array[0], array[1], array[2], array[3], array[4])
Add two fields to object mannualy
let object = {a: 1, b: 2, c: {d: 4}}; let field1 = 10; let field2 = 11; object.field = field1; object.field2 = field2;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Concat
Merge objects mannualy
Merge objects by Object.assign no clone
Merge objects by Object.assign
Merge objects by spread
Clone object by Object.assign
Clone object by spread
Clone array by slice
Add two fields to object by spread
Clone array by spread
Array to arguments by apply
Array to arguments by spread
Add two elements to array by push
Add two elements to array by spread
Add two elements to array by concat
Concat by push
Concat by spread
Array to arguments by apply manually
Add two fields to object mannualy

Fastest: N/A

Slowest: N/A

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Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

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