Module sequence 

A bunch of traits and functions for working with sequences.

Modules

prelude

Useful functions exported by tool::sequence.

Traits

Cons

A sequence that can be represented as a cons cell.

Empty

A sequence with no items.

First

A sequence with a first item.

Pair

A sequence with two items.

Second

A sequence with a second item.

Singleton

A sequence with one item.

Third

A sequence with a third item.

Triple

A sequence with three items.

Functions

first

Get the first element of a sequence with at least one element.

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.