Ah, classic name and not from the functional world. On a map there is no left or right.
rvirding
Creator of Erlang
NobbZ
I’m aware that we have no left or right in a map but we do have more data structures which in fact do have. And for some operations it is important to know if we are folding from the left or the right.
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rvirding
Creator of Erlang
Yes, for many structures you definitely need to know whether you are folding left or right. That is one reason why calling them foldl and foldr is better than just reduce. The :maps module just has fold as there is no defined ordering.
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