Issue #12512 has been updated by Yukihiro Matsumoto.


`#map_v` accepted.

Matz.


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Feature #12512: Import Hash#transform_values and its destructive version from ActiveSupport
https://bugs.ruby-lang.org/issues/12512#change-60004

* Author: Kenta Murata
* Status: Open
* Priority: Normal
* Assignee: Yukihiro Matsumoto
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I think value transformation is a fundamental feature of Hash.



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