Safe Haskell	Safe
Language	Haskell98

Data.Bool.HT

Synopsis

Documentation

if' :: Bool -> a -> a -> a Source #

if-then-else as function.

Example:

if' (even n) "even" $
if' (isPrime n) "prime" $
"boring"

The same as if', but the name is chosen such that it can be used for GHC-7.0's rebindable if-then-else syntax.

select :: a -> [(Bool, a)] -> a Source #

From a list of expressions choose the one, whose condition is true.

Example:

select "boring" $
  (even n, "even") :
  (isPrime n, "prime") :
  []

(?:) :: Bool -> (a, a) -> a infixr 1 Source #

Like the ? operator of the C progamming language. Example: bool ?: ("yes", "no").

Logical operator for implication.

Funnily because of the ordering of Bool it holds implies == (<=).