kotovalexarian-likes-github/ruby--ruby
1
0
Fork 0
mirror of https://github.com/ruby/ruby.git synced 2022-11-09 12:17:21 -05:00
Code Releases Activity

[EXPERIMENTAL] Make Symbol#to_s return a frozen String

Browse source 
* Always the same frozen String for a given Symbol.
* Avoids extra allocations whenever calling Symbol#to_s.
* See [Feature #16150]
This commit is contained in:
Benoit Daloze 2019-09-08 11:53:27 +02:00
parent 4a4c502825
commit 6ffc045a81
Notes: git 2019-09-26 17:23:27 +09:00
4 changed files with 31 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

17
spec/ruby/core/symbol/shared/id2name.rb
View file

@ -6,4 +6,21 @@ describe :symbol_id2name, shared: true do
:@ruby.send(@method).should == "@ruby"
:@@ruby.send(@method).should == "@@ruby"
end
ruby_version_is "2.7" do
it "returns a frozen String" do
:my_symbol.to_s.frozen?.should == true
:"dynamic symbol #{6 * 7}".to_s.frozen?.should == true
end
it "always returns the same String for a given Symbol" do
s1 = :my_symbol.to_s
s2 = :my_symbol.to_s
s1.should equal(s2)
s1 = :"dynamic symbol #{6 * 7}".to_s
s2 = :"dynamic symbol #{2 * 3 * 7}".to_s
s1.should equal(s2)
end
end
end