Intervals

## Usage

```
interval(
range = c(-Inf, Inf),
...,
include_lowest = closed,
include_highest = closed,
closed = FALSE,
integer = FALSE,
read_only = FALSE
)
is.Interval(x)
```

## Arguments

- range
The interval boundaries as a sorted two-element numeric vector.

- ...
First argument is used as the endpoint if

`range`

has length 1. Additional arguments, or any if`range`

has length 2, cause a warning and will be ignored.- include_lowest
Is the lower boundary part of the interval?

- include_highest
Is the upper boundary part of the interval?

- closed
Is the interval closed?

- integer
Is the interval only over the integers?

- read_only
Make the interval object read-only?

- x
An object.