Quark.Sequence protocol (Quark v2.3.2) View Source

A protocol for stepping through ordered enumerables

Link to this section Summary

t()

origin(specimen)

The beginning of the sequence.

pred(element)

The predessor in the sequence.

succ(element)

The successor in sequence.

t() :: term()

origin(any()) :: any()

The beginning of the sequence.

For instance, integers are generally thought of as centering around 0.

origin(9)
#=> 0

pred(any()) :: any()

The predessor in the sequence.

For integers, this is the number below.

pred(10)
#=> 9

42 |> origin() |> pred() |> pred()
#=> -2

succ(any()) :: any()

The successor in sequence.

For integers, this is the number above.

iex> succ(1)
#=> 2

iex> 10 |> origin() |> succ() |> succ()
#=> 2