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way to use ranges which faster than plain compare #162

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way to use ranges which faster than plain compare #162

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fdcd82e
Update README.md
towingie Aug 7, 2018
6c2ec35
Update cover-vs-include.rb
towingie Aug 7, 2018
85c3406
Merge pull request #1 from towingie/patch-1
towingie Aug 7, 2018
bd27801
Merge pull request #2 from towingie/patch-2
towingie Aug 7, 2018
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32 changes: 17 additions & 15 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -1346,24 +1346,26 @@ Comparison:

```
$ ruby -v code/range/cover-vs-include.rb
ruby 2.2.3p173 (2015-08-18 revision 51636) [x86_64-linux]

ruby 2.4.3p205 (2017-12-14 revision 61247) [x86_64-darwin17]
Warming up --------------------------------------
range#cover? 164.598k i/100ms
range#include? 9.327k i/100ms
range#member? 9.366k i/100ms
plain compare 198.178k i/100ms
between? 211.880k i/100ms
Calculating -------------------------------------
range#cover? 85.467k i/100ms
range#include? 7.720k i/100ms
range#member? 7.783k i/100ms
plain compare 102.189k i/100ms
-------------------------------------------------
range#cover? 1.816M (± 5.6%) i/s - 9.060M
range#include? 83.344k (± 5.0%) i/s - 416.880k
range#member? 82.654k (± 5.0%) i/s - 412.499k
plain compare 2.581M (± 6.2%) i/s - 12.876M
range#cover? 2.681M (± 4.5%) i/s - 13.497M in 5.044550s
range#include? 94.109k (± 1.2%) i/s - 475.677k in 5.055317s
range#member? 94.958k (± 1.8%) i/s - 477.666k in 5.031849s
plain compare 3.857M (± 1.1%) i/s - 19.421M in 5.035455s
between? 4.694M (± 1.5%) i/s - 23.519M in 5.011280s

Comparison:
plain compare: 2581211.8 i/s
range#cover?: 1816038.5 i/s - 1.42x slower
range#include?: 83343.9 i/s - 30.97x slower
range#member?: 82654.1 i/s - 31.23x slower
between?: 4694228.0 i/s
plain compare: 3857415.9 i/s - 1.22x slower
range#cover?: 2681447.3 i/s - 1.75x slower
range#member?: 94958.2 i/s - 49.43x slower
range#include?: 94109.3 i/s - 49.88x slower
```


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3 changes: 2 additions & 1 deletion code/range/cover-vs-include.rb
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Expand Up @@ -10,6 +10,7 @@
x.report('range#include?') { (BEGIN_OF_JULY..END_OF_JULY).include? DAY_IN_JULY }
x.report('range#member?') { (BEGIN_OF_JULY..END_OF_JULY).member? DAY_IN_JULY }
x.report('plain compare') { BEGIN_OF_JULY < DAY_IN_JULY && DAY_IN_JULY < END_OF_JULY }

x.report('between?') { DAY_IN_JULY.between?(BEGIN_OF_JULY,END_OF_JULY) }

x.compare!
end