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Improve String#slice! performance

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Instead of searching twice to extract and to delete, extract and
delete the found position at the first search.

This makes faster nearly twice, for regexps and strings.

|              |compare-ruby|built-ruby|
|:-------------|-----------:|---------:|
|regexp-short  |      2.143M|    3.918M|
|regexp-long   |    105.162k|  205.410k|
|string-short  |      3.789M|    7.964M|
|string-long   |      1.301M|    2.457M|
This commit is contained in:
Nobuyoshi Nakada 2020-01-31 16:53:04 +09:00
parent 0dd6f020fc
commit 05229cef45
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GPG key ID: 4BC7D6DF58D8DF60
Notes: git 2020-01-31 17:56:55 +09:00
2 changed files with 80 additions and 15 deletions
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11
benchmark/string_slice.yml Normal file
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@ -0,0 +1,11 @@
prelude: |
long_string = "x"*1000+"-hår"
benchmark:
regexp-short: |
"x-hår".slice!(/-(.)(.)(.)/, 3)
regexp-long: |
long_string.dup.slice!(/-(.)(.)(.)/, 3)
string-short: |
"x-hår".slice!("r")
string-long: |
long_string.dup.slice!("r")