From: nobu@...
Date: 2016-01-28T16:14:13+00:00
Subject: [ruby-core:73554] [Ruby trunk - Bug #12029] [Rejected] Not all elements are yielded when count is given a block

Issue #12029 has been updated by Nobuyoshi Nakada.

Description updated
Status changed from Open to Rejected

----------------------------------------
Bug #12029: Not all elements are yielded when count is given a block
https://bugs.ruby-lang.org/issues/12029#change-56764

* Author: Jason Yeo
* Status: Rejected
* Priority: Normal
* Assignee: 
* ruby -v: 2.3.0
* Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN, 2.3: UNKNOWN
----------------------------------------
When count is called on an enumerable that yields multiple elements, not all elements are yielded to the block.

~~~ruby
def foo
  yield 1, 2
end

to_enum(:foo).count { |e| e == [1, 2] }
# Returns: 0
# Expected: 1
~~~

It appears that only the first element is yielded:

~~~ruby
to_enum(:foo).count { |e| p e; e == [1, 2] }
# Prints 1
~~~




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