Import std.core.range

std.core.range

Ranges of integers, as For loops count them.

Range<T>: the integers a range gives, like 0 Until 10, 1 To 10, or 10 To 0 Step -2, which are the values a For loop with those bounds counts. The compiler makes each one from what's written, so a Range holds only the value it gives next, its step, and how many steps come after that value. An empty range is a Range's zero. Ranges are == when they give the same values.

std/core/range.fb

Types

`Range` struct

Public Struct Range<T: Numeric> Implements Iterator<T>, Iterable<T>

The integers from a start to an end, by a step, as a range like 0 Until 10 gives them.

Examples

Local evens: Int[] = []
For i In 0 Until 10 Step 2
    evens.Add(i)
End For

Expect(evens == [0, 2, 4, 6, 8])
Expect((10 To 0 Step -5).ToArray() == [10, 5, 0])

std/core/range.fb, line 24

Public ByRef Method Next(): T? method #

The next value, or Null after the last one.
Public Method Iterate(): Range<T> method #

A copy of the range, which goes over its values from where it is.

Extends

`Range` extend

Extend Range<T>

Compares Ranges with == and !=, by the values they give.

std/core/range.fb, line 55

Operator ==(a: Range<T>, b: Range<T>): Bool operator #

Whether a and b give the same values: every range that gives none does, whatever it gave before, and the step counts only where there's a value after Current.

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