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Add Hash#values_at vs Array#map { Hash#[] } comparison #174

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Add Hash#values_at vs Array#map { Hash#[] } comparison #174

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450d9cb
Added: Hash#values_at vs Hash#slice#values.
kewlar Mar 14, 2019
47e9ce1
Change: add another slicing method, and add a note about assuming all…
kewlar Mar 21, 2019
2696656
Added: other methods of slicing Hash values, when keys may not exist.
kewlar Mar 21, 2019
4b5fa8b
Fix: file name for `Hash#slice#values` vs `Hash#values_at#compact` vs…
kewlar Mar 2, 2023
4d329bb
Change: remove edge cases form Hash#values_at.
kewlar Mar 2, 2023
9b9b274
Change: update benchmarks for code/hash/values_at-vs-map.rb
kewlar Mar 2, 2023
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Change: update benchmarks for code/hash/values_at-vs-map.rb
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@kewlar
kewlar committed Mar 2, 2023
commit 9b9b2741fd4215c784dc95c6577f8f73b3dc1771
14 changes: 7 additions & 7 deletions README.md
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Expand Up @@ -1046,17 +1046,17 @@ and you care about the default values.

```
$ ruby -v code/hash/values_at-vs-map.rb
ruby 2.6.2p47 (2019-03-13 revision 67232) [x86_64-darwin18]
ruby 3.2.1 (2023-02-08 revision 31819e82c8) [x86_64-darwin22]
Warming up --------------------------------------
Hash#values_at 245.809k i/100ms
Array#map { Hash#[] } 185.153k i/100ms
Hash#values_at 503.783k i/100ms
Array#map { Hash#[] } 279.576k i/100ms
Calculating -------------------------------------
Hash#values_at 5.284M (± 3.3%) i/s - 26.547M in 5.030606s
Array#map { Hash#[] } 3.104M (± 2.7%) i/s - 15.553M in 5.014067s
Hash#values_at 4.901M (± 4.1%) i/s - 24.685M in 5.046090s
Array#map { Hash#[] } 2.801M (± 3.1%) i/s - 14.258M in 5.095692s

Comparison:
Hash#values_at : 5283787.1 i/s
Array#map { Hash#[] }: 3104255.1 i/s - 1.70x slower
Hash#values_at : 4900567.9 i/s
Array#map { Hash#[] }: 2800981.4 i/s - 1.75x slower
```

### Proc & Block
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