Just a quick Haskell pattern for you.
foldl' (flip ($)) :: Foldable t => a -> t (a -> a) -> a
It’s a handy gadget if you ever need to quickly compose a bunch of
endomorphisms (sorry, values of type
a -> a) and thread a value through them.
This may smell like the
given the sweet monoid perfume you may have noticed.
Arguably a bit more legibly/conveniently, there’s this thing:
foldr (.) id :: Foldable t => t (b -> b) -> b -> b
You may find use for this with other functions like
If anybody has an idea for a good name for these, I’m all ears.
I’m sure people have been using this for a good long while, after all…