From: "Eregon (Benoit Daloze)" <redmine@...>
Date: 2013-08-02T21:35:48+09:00
Subject: [ruby-core:56337] [CommonRuby - Feature #8723][Feedback] Array.any? predicate returns true for empty array.


Issue #8723 has been updated by Eregon (Benoit Daloze).

Status changed from Open to Feedback

Which version do you use? Please add your `ruby -v`.

irb for ruby 2.0.0 r36395
> [].any? { true }
=> false

I guess you meant for #all?

> [].all? { true }
=> true

The doc says it well:
"The method returns true if the block never returns false or nil."
Since the block is never used, it is not false or nil, so true.
----------------------------------------
Feature #8723: Array.any? predicate returns true for empty array.
https://bugs.ruby-lang.org/issues/8723#change-40830

Author: nurettin (Nurettin Onur TUGCU)
Status: Feedback
Priority: Normal
Assignee: 
Category: 
Target version: 


Are all your children redheaded?
Would this be true if you have no children?
I have no children, therefore none of my children are redheaded.
Therefore 
[].any?{ true } == true makes no sense.
Expected behavior:
[].any?{ true } == false because the array is empty.


-- 
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