com.vaadin.client.flow.collection

Class JsSet<V>

java.lang.Object

com.vaadin.client.flow.collection.JsSet<V>

Type Parameters:

V - the value type

Direct Known Subclasses:

JreJsSet

@JsType(isNative=true,
        name="Set",
        namespace="<global>")
public class JsSet<V>
extends Object

Native JS Set interface with an alternative implementation for JRE usage. Use JsCollections.set() to create an appropriate instance.

Since:

1.0

Author:

Vaadin Ltd

Constructor Summary

Constructors

Constructor and Description
JsSet() Creates a new instance.

Method Summary

Modifier and Type	Method and Description
JsSet<V>	add(V value) Adds a value to this set, overwriting any previous value if present.
void	clear() Removes all values from this set.
boolean	delete(V value) Removes the given value from the set.
void	forEach(JsCollections.ForEachCallback<V> callback) Invokes the provided callback for each value in this set.
boolean	has(V value) Checks whether this set contains the given value.
boolean	isEmpty() Checks if the set is empty (size == 0).
int	size() Gets the number of values in this set.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

JsSet

public JsSet()

Creates a new instance.

Method Detail

add

public JsSet<V> add(V value)

Adds a value to this set, overwriting any previous value if present.

Parameters:

value - the value to add

Returns:

this set, for chaining.

has

public boolean has(V value)

Checks whether this set contains the given value.

Parameters:

value - the value to check for

Returns:

true if the value is in the set; false otherwise

delete

public boolean delete(V value)

Removes the given value from the set.

Parameters:

value - the value to remove

Returns:

true if the map contained the value prior to calling this method; false otherwise

clear

public void clear()

Removes all values from this set.

forEach

public void forEach(JsCollections.ForEachCallback<V> callback)

Invokes the provided callback for each value in this set.

Parameters:

callback - the callback to invoke for each value

size

@JsProperty(name="size")
public int size()

Gets the number of values in this set.

Returns:

the value count

isEmpty

@JsOverlay
public final boolean isEmpty()

Checks if the set is empty (size == 0).

Returns:

true if the set is empty, false otherwise