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

Set the size of a new enumerator created by Enumerator#each with arguments to nil

Browse source 
When each() takes arguments, it is never safe to assume that the iteration
would repeat the same number of times as with each() without any
argument.  Actually, there is no way to get the exact number, so the
size should be set to nil to denote that.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65302 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
knu 2018-10-22 11:23:56 +00:00
parent d96483de72
commit 8717f0787d
2 changed files with 7 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
enumerator.c
View file

@ -550,6 +550,8 @@ enumerator_each(int argc, VALUE *argv, VALUE obj)
args = rb_ary_new4(argc, argv);
}
e->args = args;
e->size = Qnil;
e->size_fn = 0;
}
if (!rb_block_given_p()) return obj;
return enumerator_block_call(obj, 0, obj);

7
test/ruby/test_enumerator.rb
View file

@ -301,8 +301,11 @@ class TestEnumerator < Test::Unit::TestCase
yield
end
ary = []
e = o.to_enum.each(ary)
e.next
e = o.to_enum { 1 }
assert_equal(1, e.size)
e_arg = e.each(ary)
assert_equal(nil, e_arg.size)
e_arg.next
assert_equal([1], ary)
end