Issue #15918 has been updated by Eregon (Benoit Daloze).


Did you mean `in Set[1, 2, 3]` ?

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Bug #15918: Pattern matching for Set
https://bugs.ruby-lang.org/issues/15918#change-78489

* Author: marcandre (Marc-Andre Lafortune)
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 
* ruby -v: 
* Backport: 2.4: UNKNOWN, 2.5: UNKNOWN, 2.6: UNKNOWN
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Currently, `Set` does not respond to `deconstruct`. Shouldn't we implement it using `to_a`?

```
require 'set'
case Set[1, 2, 3]
in [1, 2, 3]
  p "match"
else
  p "no match"
end
# => "no match", should be "match"
```




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