27 Oct
2012
27 Oct
'12
3:56 a.m.
Can you please show some examples where it might be useful? I miss the point. Thanks, Thiago. 2012/10/26 John Wiegley <johnw@newartisans.com>:
Greg Fitzgerald <garious@gmail.com> writes:
I've recently found myself using the expression: "foldr (.) id" to compose a list (or Foldable) of functions.
You want the Endo monoid:
ghci> appEndo (Endo (+ 10) <> Endo (+ 20)) $ 3 33
John
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