range

contains

|Range, Number| -> Bool

Returns true if the provided number is within the range, and false otherwise.

|Range, Range| -> Bool

Returns true if the provided range is entirely contained within the range, and false otherwise.

Example

(10..20).contains 15
# -> true

(200..=100).contains 100
# -> true

x = 1..10
x.contains -1
# -> false

(10..20).contains 14..18
# -> true

(100..200).contains 50..250
# -> false

end

|Range| -> Number

Returns the end value of the range.

Example

(50..100).end()
# -> 100

(10..0).end()
# -> 0

See also

• start

expanded

|Range, amount: Number| -> Range

Returns a copy of the input range which has been 'expanded' in both directions by the provided amount.

For an ascending range this will mean that start will decrease by the provided amount, while end will increase.

Negative amounts will cause the range to shrink rather than grow.

Example

(10..20).expanded 5
# -> 5..25

(10..20).expanded -2
# -> 12..18

(5..-5).expanded 5
# -> 10..-10

(5..-5).expanded -5
# -> 0..0

(5..-5).expanded -10
# -> -5..5

intersection

|Range, Range| -> Range

Returns a range representing the intersecting region of the two input ranges.

If there is no intersecting region then null is returned.

Example

(10..20).intersection 5..15
# -> 10..15

(100..200).intersection 250..=150
# -> 150..200

(0..10).intersection 90..99
# -> null

is_inclusive

|Range| -> Bool

Returns true if the range has a defined end which is inclusive.

Example

(10..20).is_inclusive()
# -> false

(1..=10).is_inclusive()
# -> true

(100..).is_inclusive()
# -> false

start

|Range| -> Number

Returns the start value of the range.

Example

(50..100).start()
# -> 50

(10..0).start()
# -> 10

See also

• end

union

|Range, Number| -> Range

Returns the union of the range and a provided number.

If the number falls outside of the range then the resulting range will be expanded to include the number.

|Range, Range| -> Range

Returns the union of two ranges.

The resulting range will encompass all values that are contained in the two ranges, and any values that lie between them.

Example

(0..10).union 5
# -> 0..10

(0..10).union 99
# -> 0..100

a = 10..20
b = 40..50
a.union b
# -> 10..50