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End of Life Ruby 3.1 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

instance method

Set#map!

map!

Alias of #collect!

Replaces the elements with ones returned by collect(). Returns an enumerator if no block is given.

See also #collect! #length #member? #keep_if also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.0