Module tool::prelude

Useful functions to glob import.

If you don't want all of them, you can also import the prelude of an individual module.

Functions

compose	Compose two functions.
default	Return a default value.
empty	True if the value is "empty"
first	Get the first element of a sequence with at least one element.
fix	A Y-Combinator.
flip	Flip the argument order of a two-parameter function.
id	The identity function.
non_empty	False if the value is "empty"
ok	Converts Result-like values into Options.
second	Get the second element of a sequence with at least to elements
third	Get the third element of a sequence with at least three elements.
uncons	Split a sequence of at least one item into a head and tail.
unwrap	Unwraps the value.