for_

for_ is traverse_ with its arguments flipped. For a version that doesn't ignore the results see for. This is forM_ generalised to Applicative actions. for_ is just like forM_, but generalised to Applicative actions.

Examples

Basic usage:

>>> for_ [1..4] print
1
2
3
4

The for attribute.

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

Synonym for ofor_

for_ is traverse_ with its arguments flipped. For a version that doesn't ignore the results see for.

>>> for_ (C.fromList [1..4] :: PrimArray Int) print
1
2
3
4

Constrained to Container version of for_.

>>> for_ [1 .. 5 :: Int] $ \i -> when (even i) (print i)
2
4

Flipped traverse_.

The for attribute.

Convenience function as found in Data.Foldable

flip traverse_

https://developer.mozilla.org/en-US/docs/Mozilla/Tech/XUL/Attribute/for

As bitraverse_, but with the structure as the primary argument. For a version that doesn't ignore the results, see bifor.

Examples

Basic usage:

>>> bifor_ ("Hello", True) print (print . show)
"Hello"
"True"

>>> bifor_ (Right True) print (print . show)
"True"

>>> bifor_ (Left "Hello") print (print . show)
"Hello"

Traverse elements with access to the index i, discarding the results (with the arguments flipped).

ifor_ ≡ flip itraverse_

When you don't need access to the index then for_ is more flexible in what it accepts.

for_ a ≡ ifor_ a . const

As bitraverse_, but with the structure as the primary argument. For a version that doesn't ignore the results, see bifor.

>>> > bifor_ ('a', "bc") print (print . reverse)
'a'
"cb"

ofor_ is otraverse_ with its arguments flipped.

Flipped version of hctraverse_.

btraverse_ with the arguments flipped.

ttraverse_ with the arguments flipped.