Today I Learned

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Ruby #then returns the result of the block

Kernel#then is similar to #tap, but the return values are different; #tap returns self, but #then returns the result of the block:

"a".tap  {|s| Time.current }
=> "a"

"a".then {|s| Time.current }
=> Thu, 02 Dec 2021 16:50:57.454554000 UTC +00:00
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