Run results for: 2d array construction

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.4 Safari/605.1.15

Browser: Safari 18

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

140K/s

135K/s

134K/s

121K/s

98K/s

View exact numbers

Script Preparation code:

rows = 500;
cols = 500;

Tests:

1
Array.from({ length: rows }, () => Array().fill(0, 0, cols))
2
Array(rows).fill(null).map(() => Array().fill(0, 0, cols))
3
[...Array(rows)].map(() => Array().fill(0, 0, cols))
4
Array.from(new Array(rows), () => Array().fill(0, 0, cols))
5
Array(rows).fill(0).map(() => Array().fill(0, 0, cols))
6
Array(rows).fill(void 0).map(() => Array().fill(0, 0, cols))
7
Array(rows).fill(undefined).map(() => Array().fill(0, 0, cols))