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Commit 895b4a8

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add substring inclusion checking
1 parent 9591cbb commit 895b4a8

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-14
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2 files changed

+24
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‎README.md‎

Lines changed: 18 additions & 13 deletions
Original file line numberDiff line numberDiff line change
@@ -985,25 +985,30 @@ Comparison:
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> This is only useful for cases where you are checking <br>
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> for a match and not using the resultant match object. <br>
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> :warning: <br>
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> `Regexp#===` is also faster than `String#match` but you need to switch the order of arguments.
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> `Regexp#===` is also faster than `String#match` but you need to switch the order of arguments.<br>
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> :warning: <br>
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> `String#include?` This is only useful for cases where you are checking substring inclusion
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```
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$ ruby -v code/string/===-vs-=~-vs-match.rb.rb
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ruby 2.2.2p95 (2015年04月13日 revision 50295) [x86_64-darwin14]
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$ ruby -v code/string/===-vs-=~-vs-match.rb
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ruby 2.4.2p198 (2017年09月14日 revision 59899) [x86_64-darwin16]
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Warming up --------------------------------------
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String#include? 238.465k i/100ms
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String#=~ 161.826k i/100ms
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Regexp#=== 147.986k i/100ms
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String#match 136.749k i/100ms
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Calculating -------------------------------------
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String#=~ 98.184k i/100ms
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Regexp#=== 92.382k i/100ms
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String#match 83.601k i/100ms
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-------------------------------------------------
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String#=~ 2.442M (± 7.6%) i/s - 12.175M
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Regexp#=== 2.259M (± 7.9%) i/s - 11.271M
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String#match 1.840M (± 7.3%) i/s - 9.196M
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String#include? 5.961M (± 8.5%) i/s - 29.808M in 5.035615s
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String#=~ 2.843M (± 8.1%) i/s - 14.241M in 5.040590s
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Regexp#=== 2.689M (± 7.3%) i/s - 13.467M in 5.032779s
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String#match 2.371M (± 5.2%) i/s - 11.897M in 5.031192s
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Comparison:
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String#=~: 2442335.1 i/s
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Regexp#===: 2259277.3 i/s - 1.08x slower
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String#match: 1839815.4 i/s - 1.33x slower
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String#include?: 5960785.4 i/s
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String#=~: 2843384.2 i/s - 2.10x slower
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Regexp#===: 2689290.6 i/s - 2.22x slower
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String#match: 2370791.0 i/s - 2.51x slower
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```
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See [#59](https://github.com/JuanitoFatas/fast-ruby/pull/59) and [#62](https://github.com/JuanitoFatas/fast-ruby/pull/62) for discussions.

‎code/string/===-vs-=~-vs-match.rb‎

Lines changed: 6 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1,6 +1,10 @@
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require "benchmark/ips"
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def fastest
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"foo".freeze.include? 'boo'
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end
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def faster
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"foo".freeze =~ /boo/
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end
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@@ -13,7 +17,8 @@ def slow
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end
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Benchmark.ips do |x|
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x.report("String#=~") { fastest }
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x.report("String#include?") { fastest }
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x.report("String#=~") { faster }
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x.report("Regexp#===") { fast }
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x.report("String#match") { slow }
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x.compare!

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