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A comment on "Useless syntax sugar": Numbered block parameters in Ruby. Parent comment

Re:"Useless syntax sugar": Numbered block parameters in Ruby by Varriount on Wednesday October 11, 2023 @09:25PM (#37852426) 

  Surprisingly few attempts even seem to get over the bar of understanding what currying is, and why it isn't just partial application.
Huh, what is the difference between currying and partial application? I always thought the terms were interchangeable.
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Re:"Useless syntax sugar": Numbered block parameters in Ruby by dragonwriter on Thursday October 12, 2023 @05:28AM (#37855068)
> Huh, what is the difference between currying and partial application?

Partial application (of one arg) takes a function that is of type:

   (a, b, c) -> d
And makes it:

  a -> (b, c) -> d
Currying makes it:

  a -> b -> c -> d
Ruby’s Proc#curry does magic that mostly lets you pretend its either or something in between.
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