[ruby-core:76880] [Ruby trunk Feature#12512] Import Hash#transform_values and its destructive version from ActiveSupport

Issue #12512 has been updated by Marc-Andre Lafortune.


Yukihiro Matsumoto wrote:
> From our discussion, we concerned `map_values` is too close to `map.values`, which has totally different semantics.

But isn't `map.values` non sensical? 

    {}.map.values # => NoMethodError: undefined method `values' for #<Enumerator: {}:map>

Moreover, it usually will be `map_values { |k,v| ... }`  (i.e. followed by a block), while we never see `h.values { ... }`.

I don't see how there could be confusion here.

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Feature #12512: Import Hash#transform_values and its destructive version from ActiveSupport
https://bugs.ruby-lang.org/issues/12512#change-60102

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



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