From: sawadatsuyoshi@...
Date: 2019-08-14T21:24:22+00:00
Subject: [ruby-core:94358] [Ruby master Feature#16104] Introduce merge_if	and merge_if!

Issue #16104 has been updated by sawa (Tsuyoshi Sawada).


Do

```ruby
a.each_with_object(b: 'Ball') {|(k, v), h| h[k] = v if v == 'Apple'}
```

or

```ruby
{b: 'Ball'}.merge(a.select{|k, v| v == 'Apple'})
```



----------------------------------------
Feature #16104: Introduce merge_if and merge_if!
https://bugs.ruby-lang.org/issues/16104#change-80765

* Author: akash (Akash Gupta)
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 
----------------------------------------
The method `merge_if` / `merge_if` will merge the passed hash in parameter only if the block evaluates to true, otherwise not. Similar to `count` method with a block.



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