Safe Haskell | Safe |
---|---|

Language | Haskell2010 |

## Synopsis

- (?*>) :: Alternative f => Bool -> f a -> f a
- (?$>) :: Alternative f => Bool -> a -> f a

# Documentation

(?*>) :: Alternative f => Bool -> f a -> f a Source #

Guard: return the action `f`

only if the boolean is `True`

(?$>) :: Alternative f => Bool -> a -> f a Source #

Guard: return the value `a`

only if the boolean is `True`