From: samuel@...
Date: 2019-02-13T22:08:55+00:00
Subject: [ruby-core:91537] [Ruby trunk Feature#7394] Enumerable#find ifnone parameter could be non-callable

Issue #7394 has been updated by ioquatix (Samuel Williams).


Just because it might cause some surprise, perhaps we can use keyword argument for this.

e.g.

```ruby
a = [1, 2, 3]
a.find(else: 0) { |x| x > 3 } #=> 0
```

I kind of prefer original suggestion, but I can imagine if passing an object that responds to `#call` it might have unexpected behaviour.

----------------------------------------
Feature #7394: Enumerable#find ifnone parameter could be non-callable
https://bugs.ruby-lang.org/issues/7394#change-76794

* Author: zzak (Zachary Scott)
* Status: Assigned
* Priority: Normal
* Assignee: nobu (Nobuyoshi Nakada)
* Target version: 
----------------------------------------
=begin
from github:
https://github.com/ruby/ruby/pull/186

In trunk the Enumerable #find method ifnone parameter has to be callable or nil. I found that sometimes I want to return a simple value without wrapping it in a proc. This pull request adds support for non-callable defaults when no items match.

(({a = [1, 2, 3]}))

The current behavior
(({a.find(proc { :foo }) { |x| x > 3 } #=> :foo}))

With patch
(({a.find(0) { |x| x > 3 } #=> 0}))
=end


---Files--------------------------------
enumerable_find_noncallable.patch (3.45 KB)


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