CGAL 6.1 - Interval Skip List

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Interval Concept Reference
Reference Manual » Concepts

## Definition

The concept `Interval` describes the requirements for the template argument `Interval` of a `Interval_skip_list<Interval>`.

The concept does not specify, whether the interval is open or closed. It is up to the implementer of a model for this concept to define that.

Has models
  `CGAL::Interval_skip_list_interval<Value>`
  `CGAL::Level_interval`

See also
  `Interval_skip_list`

Examples
  Interval_skip_list/intervals.cpp, and Interval_skip_list/isl_terrain.cpp.

## Types
typedef unspecified_type | Value
| The type of the lower and upper bound of the interval.

## Creation
| Interval ()
| Default constructor.

## Access Functions
Value | inf () const
| Returns the lower bound.
Value | sup () const
| Returns the upper bound.
bool | contains (const Value &v) const
| Returns `true`, iff the interval contains `v`.
bool | contains_interval (const Value &i, const Value &s) const
| Returns `true`, iff the interval contains `(i,s)`.
bool | operator== (const Interval &I) const
| Equality test.
bool | operator!= (const Interval &I) const
| Inequality test.