interval

type

integer, from T, through option T, step T)

[Module base]

An interval `from..through` that includes `from`, `from+step`, `from+step+step`,
etc. up to and including `through`.

In case step is positive (negative), the first value larger (smaller) than
through will not be included.

In case `step.sign = (from ⋄ through).sign`, this `Set` is empty, e.g.,
`interval 1 2 -1` and `interval 2 1 1` are both empty.

Precondition

pre
  debug: ((step.sign = 0): through=from)

Type Parameters

integer

[Module base]

[src]

Fields

from

[Module base]

[src]

the first element of this Set when used as a Sequence

through

option T

[Module base]

[src]

upper/lower bound for elements in this Set

in case this is nil, there is no bound except for the
range of legal values for T.

step

[Module base]

[src]

the distance between to elements

Functions

group_hashable_by

type

property.hashable, f Unary K T)

container.Map K (Sequence T)

[Inherited from Sequence]

[src]

group the elements of this sequence by a key of type K

f determines the key of an element

0.095dev (GIT hash 09dff08de289bbb6f7136c7e2f8c66dcc1856bba)

last changed: 2026-04-16