View Source Interval

docs: https://hexdocs.pm/interval

inspired by PostgreSQL's range types

installation

Installation

The package can be installed by adding interval to your list of dependencies in mix.exs:

def deps do
  [
    {:interval, "~> 0.1.0"}
  ]
end

concept

Concept

interval

Interval

empty

Empty

bounds

Bounds

examples

Examples

Integer intervals

a = Interval.new(left: 1, right: 4, bounds: "[]")
b = Interval.new(left: 2, right: 5, bounds: "[]")

assert Interval.contains?(a, b)
assert Interval.overlaps?(a, b)

c = Interval.intersection(a, b) # [2, 4]
d = Interval.union(a, b) # [1, 5]

DateTime intervals

# default bound is  "[)"
y2022 = Interval.new(left: ~U[2022-01-01 00:00:00Z], right: ~U[2023-01-01 00:00:00Z])
x = Interval.new(left: ~U[2018-07-01 00:00:00Z], right: ~U[2022-03-01 00:00:00Z])

Interval.intersection(y2022, x)

# %Interval{
#   left: %Interval.Endpoint{inclusive: true, point: ~U[2022-01-01 00:00:00Z]},
#   right: %Interval.Endpoint{inclusive: false, point: ~U[2022-03-01 00:00:00Z]}
# }