Created
July 11, 2024 10:03
-
-
Save schultek/d4f8cc0d46873a6324dc106c6a288bd8 to your computer and use it in GitHub Desktop.
map performance benchmark
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| void main() { | |
| bench('version 1', () { | |
| get1(); | |
| }); | |
| bench('version 2', () { | |
| get2(); | |
| }); | |
| } | |
| Map<String, dynamic> get1() { | |
| return { | |
| 'a': 1, | |
| 'b': 2, | |
| 'c': 3, | |
| 'd': 4, | |
| }; | |
| } | |
| Map<String, dynamic> get2() { | |
| final map = <String, dynamic>{}; | |
| map['a'] = 1; | |
| map['b'] = 2; | |
| map['c'] = 3; | |
| map['d'] = 4; | |
| return map; | |
| } | |
| void bench(String name, void Function() f, | |
| {int times = 200000, bool sum = true}) { | |
| for (var i = 0; i < times / 2; i++) { | |
| f(); | |
| } | |
| final s = Stopwatch()..start(); | |
| for (var i = 0; i < times; i++) { | |
| f(); | |
| } | |
| s.stop(); | |
| var time = formatTime(s.elapsedMicroseconds ~/ (sum ? 1 : times)); | |
| print("$name: $time"); | |
| } | |
| String formatTime(int microseconds) { | |
| if (microseconds < 5000) { | |
| return '${microseconds}µs'; | |
| } else if (microseconds < 1000000) { | |
| return '${microseconds / 1000}ms'; | |
| } else { | |
| return '${microseconds / 1000000}s'; | |
| } | |
| } |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment