[ruby-core:115592] [Ruby master Feature#20040] Make Hash respond do deconstruct to allow matchting key/value pairs

Issue #20040 has been reported by [e-mail] (Jochen Seeber).

----------------------------------------
Feature #20040: Make Hash respond do deconstruct to allow matchting key/value pairs
https://bugs.ruby-lang.org/issues/20040

* Author: [e-mail] (Jochen Seeber)
* Status: Open
* Priority: Normal
----------------------------------------
It would be nice to allow pattern matching to work on key/value pairs of a Hash to e.g. find the first entry, or entries where the key is not known.

Example:

```
class Hash; def deconstruct = to_a; end

{a: 1, b: 2} => [[k, v], *]
puts "k=#{k}" # :a
puts "v=#{v}" # 1

{a: 1, b: 2} => [*, [k, 2], *]
puts "k=#{k}" # :b
```



-- 
https://bugs.ruby-lang.org/
 ______________________________________________
 ruby-core mailing list -- [e-mail]
 To unsubscribe send an email to [e-mail]
 ruby-core info -- https://ml.ruby-lang.org/mailman3/postorius/lists/ruby-core.ml.ruby-lang.org/