mapM and traverse on Set

[haskell]

mapM and traverse on Set

[foxik]

Currently the Traversable operations of Data.Map and Data.IntMap operate on values.They would have to be used on keys of Data.Set.

From this point of view, there are no Traversable operations working on keys in any container.

Furthermore, the implementation of such an operation would not be very efficient -- as the order of keys can change, it has do an analogous of fromList and needs an Ord instance for keys.

What are the operations you would like to add?

[bgamari]

This is a fair point. Given your point, I'd say this can be closed. There was a function I thought I needed when I opened this, but if I recall correctly I found a better way to accomplish the task anyways. Thanks!