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Inline your callbacks
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| const f = (g: (x: number) => number) => (x: number) => g(x) | |
| Deno.bench("closure directly", { baseline: true }, () => { | |
| const foo = [...Array(1000).keys()].map(f((x) => x + 1)) | |
| }) | |
| Deno.bench("closure indirectly", () => { | |
| const g = f((x) => x + 1) | |
| const foo = [...Array(1000).keys()].map(g) | |
| }) | |
| Deno.bench("closure very indirectly", () => { | |
| const g = (x: number) => x + 1 | |
| const h = f(g) | |
| const foo = [...Array(1000).keys()].map(h) | |
| }) |
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| benchmark time (avg) iter/s (min … max) p75 p99 p995 | |
| ----------------------------------------------------------------------------- ----------------------------- | |
| closure directly 17.2 µs/iter 58,139.5 (15.62 µs … 328.54 µs) 16.08 µs 64.62 µs 68.96 µs | |
| closure indirectly 21.5 µs/iter 46,522.4 (19.92 µs … 130.17 µs) 20.75 µs 72.04 µs 77.75 µs | |
| closure very indirectly 21.39 µs/iter 46,744.3 (19.88 µs … 518.67 µs) 20.62 µs 31.25 µs 96.71 µs | |
| summary | |
| closure directly | |
| 1.24x faster than closure very indirectly | |
| 1.25x faster than closure indirectly |
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