Interval<T> class

An interval over an ordering of type T.

See https://en.wikipedia.org/wiki/Interval_(mathematics).

Available Extensions

Constructors

Interval.all({Comparator<T> comparator = naturalCompare})
Returns a interval containing all values of type T: { x ∈ T }
factory
Interval.atLeast(T lower, {Comparator<T> comparator = naturalCompare})
Returns a interval containing { x ∈ T | lower <= x }.
factory
Interval.atMost(T upper, {Comparator<T> comparator = naturalCompare})
Returns a interval containing { x ∈ T | x <= upper }.
factory
Interval.closed(T lower, T upper, {Comparator<T> comparator = naturalCompare})
Returns a interval containing { x ∈ T | lower <= x <= upper }.
factory
Interval.closedOpen(T lower, T upper, {Comparator<T> comparator = naturalCompare})
Returns a interval containing { x ∈ T | lower <= x < upper }.
factory
Interval.empty({Comparator<T> comparator = naturalCompare})
Returns an empty interval of type T: {} = ∅
factory
Interval.greaterThan(T lower, {Comparator<T> comparator = naturalCompare})
Returns a interval containing { x ∈ T | lower < x }.
factory
Interval.lessThan(T upper, {Comparator<T> comparator = naturalCompare})
Returns a interval containing { x ∈ T | x < upper }.
factory
Interval.open(T lower, T upper, {Comparator<T> comparator = naturalCompare})
Returns a interval containing { x ∈ T | lower < x < upper }.
factory
Interval.openClosed(T lower, T upper, {Comparator<T> comparator = naturalCompare})
Returns a interval containing { x ∈ T | lower < x <= upper }.
factory
Interval.single(T value, {Comparator<T> comparator = naturalCompare})
Returns an interval containing a single value of type T: { x ∈ T | x = value }.
factory

Properties

comparator → Comparator<T>
Returns the underlying comparator of this interval.
final
hashCode → int
The hash code for this object.
no setteroverride
isBounded → bool
Returns true, if this is interval has a definite upper and lower bound.
no setter
isEmpty → bool
Returns true, if this is an empty interval.
no setter
isNotEmpty → bool
Returns true, if this is a non-empty interval.
no setter
isSingle → bool
Returns true, if this is a degenerated interval with a single value.
no setter
lower → LowerBound<T>
Returns the upper bound of this interval.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
upper → UpperBound<T>
Returns the lower bound of this interval.
final

Methods

contains(T value) → bool
Returns true, if the value is included in this interval.
intersection(Interval<T> other) → Interval<T>
Returns the intersection of this interval and other.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
span(Interval<T> other) → Interval<T>
Returns the minimal interval enclosing this interval and other.
toString() → String
A string representation of this object.
override

Operators

operator ==(Object other) → bool
The equality operator.
override