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set: speed up Set#include?

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* lib/set.rb (initialize): internal hash defaults to false

* lib/set.rb (include?): use Hash#[] for optimized dispatch.
  Patch by Ismael Abreu <ismaelga@gmail.com>
  [ruby-core:67664] [Misc #10754]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49568 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
normal 2015-02-11 19:04:16 +00:00
parent 5e868b2bca
commit 709e0ecbda
2 changed files with 10 additions and 2 deletions
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8
ChangeLog
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@ -1,3 +1,11 @@
Thu Feb 12 03:28:05 2015 Eric Wong <e@80x24.org>
* lib/set.rb (initialize): internal hash defaults to false
* lib/set.rb (include?): use Hash#[] for optimized dispatch.
Patch by Ismael Abreu <ismaelga@gmail.com>
[ruby-core:67664] [Misc #10754]
Wed Feb 11 11:09:52 2015 Nobuyoshi Nakada <nobu@ruby-lang.org>
* ext/digest/digest_conf.rb (digest_conf): check for CommonDigest.

4
lib/set.rb
View file

@ -78,7 +78,7 @@ class Set
# If a block is given, the elements of enum are preprocessed by the
# given block.
def initialize(enum = nil, &block) # :yields: o
@hash ||= Hash.new
@hash ||= Hash.new(false)
enum.nil? and return
@ -209,7 +209,7 @@ class Set
# Returns true if the set contains the given object.
def include?(o)
@hash.include?(o)
@hash[o]
end
alias member? include?