From: "knu (Akinori MUSHA)" <noreply@...>
Date: 2021-10-06T12:46:51+00:00
Subject: [ruby-core:105569] [Ruby master Feature#12075] some container#nonempty?

Issue #12075 has been updated by knu (Akinori MUSHA).


Probably not, considering that some classes I named earlier, File::Stat and Enumerator, only have #size and no #length.
Adding #length? in itself would be fine, but that'd make you feel awkward not to add #length also. ����

----------------------------------------
Feature #12075: some container#nonempty?
https://bugs.ruby-lang.org/issues/12075#change-94026

* Author: naruse (Yui NARUSE)
* Status: Feedback
* Priority: Normal
* Assignee: matz (Yukihiro Matsumoto)
----------------------------------------
I sometimes write following code.

```ruby
ary = some_metho_returns_nil_or_empty_container() # nil or "" or [] or {}

if ary && !ary.empty?
  #  some code
end
```

But the condition `ary && !ary.empty?` is too long and complex.
Though Ruby 2.3 introduces `&.`, but this can���t be written as `ary&.empty?`.

One idea is add `nonempty?` write as `ary&.nonempty?`.

akr: `nonempty?` is not good name because human is not good at handling 

This discussion matches following core classes:

* String
* Array
* Hash



-- 
https://bugs.ruby-lang.org/

Unsubscribe: <mailto:ruby-core-request@ruby-lang.org?subject=unsubscribe>
<http://lists.ruby-lang.org/cgi-bin/mailman/options/ruby-core>