concat vs push.apply (v13)

Revision 13 of this benchmark created on

Setup

var  A = [];
    
    for (var i = 0; i < 42; ++i) {
      A[i] = {};
    }

Test runner

Ready to run.

Testing in
TestOps/sec
concat
function test() {
 A = A.concat(arguments);
}

for (i = 0; i < 1000; ++i) {
  test(1,2,3,4,5,6,7,8,9,10);
}
ready
push.apply
function test() {
 A.push.apply(A, arguments);
}

for (i = 0; i < 1000; ++i) {
  test(1,2,3,4,5,6,7,8,9,10);
}
ready
Array.prototype.push.apply
function test() {
 Array.prototype.push.apply(A, arguments);
}

for (i = 0; i < 1000; ++i) {
  test(1,2,3,4,5,6,7,8,9,10);
}
ready
Array.prototype.push cached
var cachedPush = Array.prototype.push;

function test() {
 cachedPush.apply(A, arguments);
}

for (i = 0; i < 1000; ++i) {
  test(1,2,3,4,5,6,7,8,9,10);
}
ready
push.apply 2
function test() {
  [].push.apply(A, arguments);
}

for (i = 0; i < 1000; ++i) {
  test(1,2,3,4,5,6,7,8,9,10);
}
ready
concat pure array
function test(array) {
 A = A.concat(array);
}

for (i = 0; i < 1000; ++i) {
  test([1,2,3,4,5,6,7,8,9,10]);
}
ready
concat (not always to the same array)
function test() {
 A = [1,2,3,4,5,6,7,8,9,10];
 A = A.concat(arguments);
}

for (i = 0; i < 1000; ++i) {
  test(1,2,3,4,5,6,7,8,9,10);
}
ready
push.apply (not always to the same array)
function test() {
 A = [1,2,3,4,5,6,7,8,9,10];
 A.push.apply(A, arguments);
}

for (i = 0; i < 1000; ++i) {
  test(1,2,3,4,5,6,7,8,9,10);
}
ready

Revisions

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