:: Monad m => [a] -> (a -> m ()) -> m () package:rio
forM_ is
mapM_ with its arguments flipped. For a version
that doesn't ignore the results see
forM.
As of base 4.8.0.0,
forM_ is just
for_, specialized to
Monad.
O(n) Apply the monadic action to all elements of a vector and
ignore the results. Equivalent to
flip mapM_.
for_ is
traverse_ with its arguments flipped. For a
version that doesn't ignore the results see
for.
>>> for_ [1..4] print
1
2
3
4
Map each element of a structure to a monadic action, evaluate these
actions from left to right, and ignore the results. For a version that
doesn't ignore the results see
mapM.
As of base 4.8.0.0,
mapM_ is just
traverse_, specialized
to
Monad.
O(n) Apply the monadic action to all elements of a vector and
ignore the results