[Java] Class NumberRange
- groovy.lang.NumberRange
- All Implemented Interfaces and Traits:
- Range
public class NumberRange extends AbstractList
Represents an immutable list of Numbers from a value to a value with a particular step size. In general, it isn't recommended using a NumberRange as a key to a map. The range 0..3 is deemed to be equal to 0.0..3.0 but they have different hashCode values, so storing a value using one of these ranges couldn't be retrieved using the other.
- Since:
- 2.5.0
Constructor Summary
Constructor and description |
---|
NumberRange
(T from, U to) Creates an inclusive NumberRange with step size 1. |
NumberRange
(T from, U to, boolean inclusive) Creates a new NumberRange with step size 1. |
NumberRange
(T from, U to, V stepSize) Creates an inclusive NumberRange. |
NumberRange
(T from, U to, V stepSize, boolean inclusive) Creates a NumberRange. |
Methods Summary
Type Params | Return Type | Name and description |
---|---|---|
<T extends def> | NumberRange |
by(T stepSize) For a NumberRange with step size 1, creates a new NumberRange with the same from and to as this NumberRange but with a step size of stepSize . |
boolean |
contains(Object value) iterates over all values and returns true if one value matches. | |
boolean |
containsWithinBounds(Object value) Checks whether a value is between the from and to values of a Range | |
boolean |
equals(Object that) An object is deemed equal to this NumberRange if it represents a List of items and those items equal the list of discrete items represented by this NumberRange. | |
boolean |
fastEquals(NumberRange that) Compares a NumberRange to another NumberRange using only a strict comparison of the NumberRange properties. | |
Comparable |
get(int index) | |
Comparable |
getFrom() | |
Comparable |
getStepSize() | |
Comparable |
getTo() | |
int |
hashCode() A NumberRange's hashCode is based on hashCode values of the discrete items it represents. | |
String |
inspect() | |
boolean |
isReverse() | |
Iterator<Comparable> |
iterator() {@inheritDoc} | |
int |
size() | |
void |
step(int numSteps, Closure closure) {@inheritDoc} | |
List<Comparable> |
step(int numSteps) | |
List<Comparable> |
subList(int fromIndex, int toIndex) | |
RangeInfo |
subListBorders(int size) A method for determining from and to information when using this IntRange to index an aggregate object of the specified size. | |
String |
toString() |
Inherited Methods Summary
Methods inherited from class | Name |
---|---|
class AbstractList | add, add, remove, get, equals, hashCode, indexOf, clear, iterator, lastIndexOf, subList, addAll, set, listIterator, listIterator, remove, toString, contains, isEmpty, size, toArray, toArray, addAll, containsAll, removeAll, retainAll, wait, wait, wait, getClass, notify, notifyAll, stream, removeIf, parallelStream, forEach, replaceAll, size, spliterator, sort |
Constructor Detail
public NumberRange(T from, U to)
Creates an inclusive NumberRange with step size 1. Creates a reversed range if from
< to
.
- Parameters:
-
from
- the first value in the range -
to
- the last value in the range
public NumberRange(T from, U to, boolean inclusive)
Creates a new NumberRange with step size 1. Creates a reversed range if from
< to
.
- Parameters:
-
from
- start of the range -
to
- end of the range -
inclusive
- whether the range is inclusive
public NumberRange(T from, U to, V stepSize)
Creates an inclusive NumberRange. Creates a reversed range if from
< to
.
- Parameters:
-
from
- start of the range -
to
- end of the range -
stepSize
- the gap between discrete elements in the range
public NumberRange(T from, U to, V stepSize, boolean inclusive)
Creates a NumberRange. Creates a reversed range if from
< to
.
- Parameters:
-
from
- start of the range -
to
- end of the range -
stepSize
- the gap between discrete elements in the range -
inclusive
- whether the range is inclusive
Method Detail
<T extends def> public NumberRange by(T stepSize)
For a NumberRange with step size 1, creates a new NumberRange with the same from
and to
as this NumberRange but with a step size of stepSize
.
- Parameters:
-
stepSize
- the desired step size
- Returns:
- a new NumberRange
@Override public boolean contains(Object value)
iterates over all values and returns true if one value matches. Also see containsWithinBounds.
@Override public boolean containsWithinBounds(Object value)
Checks whether a value is between the from and to values of a Range
- Parameters:
-
value
- the value of interest
- Returns:
- true if the value is within the bounds
@Override public boolean equals(Object that)
An object is deemed equal to this NumberRange if it represents a List of items and those items equal the list of discrete items represented by this NumberRange.
- Parameters:
-
that
- the object to be compared for equality with this NumberRange
- Returns:
-
true
if the specified object is equal to this NumberRange
- See Also:
- fastEquals(NumberRange)
public boolean fastEquals(NumberRange that)
Compares a NumberRange to another NumberRange using only a strict comparison of the NumberRange properties. This won't return true for some ranges which represent the same discrete items, use equals instead for that but will be much faster for large lists.
- Parameters:
-
that
- the NumberRange to check equality with
- Returns:
-
true
if the ranges are equal
@Override public Comparable get(int index)
@Override public Comparable getFrom()
public Comparable getStepSize()
@Override public Comparable getTo()
@Override public int hashCode()
A NumberRange's hashCode is based on hashCode values of the discrete items it represents.
- Returns:
- the hashCode value
@Override public String inspect()
@Override public boolean isReverse()
@Override public Iterator<Comparable> iterator()
{@inheritDoc}
@Override public int size()
@Override public void step(int numSteps, Closure closure)
{@inheritDoc}
@Override public List<Comparable> step(int numSteps)
@Override public List<Comparable> subList(int fromIndex, int toIndex)
public RangeInfo subListBorders(int size)
A method for determining from and to information when using this IntRange to index an aggregate object of the specified size. Normally only used internally within Groovy but useful if adding range indexing support for your own aggregates.
- Parameters:
-
size
- the size of the aggregate being indexed
- Returns:
- the calculated range information (with 1 added to the to value, ready for providing to subList
@Override public String toString()
© 2003-2020 The Apache Software Foundation
Licensed under the Apache license.
https://docs.groovy-lang.org/2.5.14/html/gapi/groovy/lang/NumberRange.html