bool-extras

A fold function for Bool http://tom.lokhorst.eu/bool-extras

Version on this page:0.4.0
LTS Haskell 9.18:0.4.0
Stackage Nightly 2017-07-25:0.4.0
Latest on Hackage:0.4.0
BSD3 licensed by Erik Hesselink, Jeroen Leeuwestein, Tom Lokhorst, Sebastiaan Visser
Maintained by Tom Lokhorst

Module documentation for 0.4.0

The bool function allows folding over boolean values.

This is comparable to the maybe or either functions on their respective types.

The bool function is a replacement for the build-in if then else-syntax. However, since it is a function, it can be partially applied and passed around to higher order functions, like so:

ghci> :m + Data.Bool.Extras
ghci> let yesOrNo = bool "no" "yes"
ghci> map yesOrNo [True, False, True]
["yes", "no", "yes"]

Note that the arguments to bool are in the opposite order of the if then else-syntax; First the false value, then the true value, and finally the boolean.

Depends on 1 package:
Used by 2 packages:
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