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groovy.lang.MapWithDefault

All Implemented Interfaces and Traits:

Map
```
public final class MapWithDefault<K, V>
extends Object
implements Map
```
A wrapper for Map which allows a default value to be specified using a closure. Normally not instantiated directly but used via the DGM withDefault method.
Since:
1.7.1

Methods Summary

Methods
Type Params	Return Type	Name and description
	`public void`	`clear()`
	`public boolean`	`containsKey(Object key)`
	`public boolean`	`containsValue(Object value)`
	`public Set<Map.Entry<K, V>>`	`entrySet()`
	`public boolean`	`equals(Object obj)`
	`public V`	`get(Object key)` Returns the value to which the specified key is mapped, or the default value as specified by the initializing closure if this map contains no mapping for the key.
	`public int`	`hashCode()`
	`public boolean`	`isEmpty()`
	`public Set<K>`	`keySet()`
`<K, V>`	`public static Map<K, V>`	`newInstance(Map<K, V> m, Closure<V> initClosure)` Decorates the given Map allowing a default value to be specified.
`<K, V>`	`public static Map<K, V>`	`newInstance(Map<K, V> m, boolean autoGrow, boolean autoShrink, Closure<V> initClosure)` Decorates the given Map allowing a default value to be specified.
	`public V`	`put(K key, V value)` Associates the specified value with the specified key in this map.
	`public void`	`putAll(Map<? extends K, ? extends V> m)`
	`public V`	`remove(Object key)`
	`public int`	`size()`
	`public Collection<V>`	`values()`

Inherited Methods Summary

Inherited Methods
Methods inherited from class	Name
`class Object`	`equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- Method Detail
  - @Override
    public void clear()
  - @Override
    public boolean containsKey(Object key)
  - @Override
    public boolean containsValue(Object value)
  - @Override
    public Set<Map.Entry<K, V>> entrySet()
  - @Override
    public boolean equals(Object obj)
  - @Override
    public V get(Object key)
    
    Returns the value to which the specified key is mapped, or the default value as specified by the initializing closure if this map contains no mapping for the key. If autoGrow is true and the initializing closure is called, the map is modified to contain the new key and value so that the calculated value is effectively cached if needed again. Otherwise, the map will be unchanged.
  - @Override
    public int hashCode()
  - @Override
    public boolean isEmpty()
  - @Override
    public Set<K> keySet()
  - <K, V> public static Map<K, V> newInstance(Map<K, V> m, Closure<V> initClosure)
    
    Decorates the given Map allowing a default value to be specified.
    Parameters:
    m - a Map to wrap
    initClosure - the closure which when passed the key returns the default value
    Returns:
    the wrapped Map
  - <K, V> public static Map<K, V> newInstance(Map<K, V> m, boolean autoGrow, boolean autoShrink, Closure<V> initClosure)
    
    Decorates the given Map allowing a default value to be specified. Allows the behavior to be configured using autoGrow and autoShrink parameters. The value of autoShrink doesn't alter any values in the initial wrapped map, but you can start with an empty map and use putAll if you really need the minimal backing map value.
    Parameters:
    m - a Map to wrap
    autoGrow - when true, also mutate the map adding in this value; otherwise, don't mutate the map, just return to calculated value
    autoShrink - when true, ensure the key will be removed if attempting to store the default value using put or putAll
    initClosure - the closure which when passed the key returns the default value
    Returns:
    the wrapped Map
    Since:
    4.0.1
  - @Override
    public V put(K key, V value)
    
    Associates the specified value with the specified key in this map. If autoShrink is true, the initializing closure is called and if it evaluates to the value being stored, the value will not be stored and indeed any existing value will be removed. This can be useful when trying to keep the memory requirements small for large key sets where only a spare number of entries differ from the default.
    Returns:
    the previous value associated with key if any, otherwise null.
  - @Override
    public void putAll(Map<? extends K, ? extends V> m)
  - @Override
    public V remove(Object key)
  - @Override
    public int size()
  - @Override
    public Collection<V> values()

Summary:
Method

| Detail:
Method

[Java] Class MapWithDefault<K, V>

Methods Summary

Inherited Methods Summary

Method Detail

@Override
public void clear()

@Override
public boolean containsKey(Object key)

@Override
public boolean containsValue(Object value)

@Override
public Set<Map.Entry<K, V>> entrySet()

@Override
public boolean equals(Object obj)

@Override
public V get(Object key)

@Override
public int hashCode()

@Override
public boolean isEmpty()

@Override
public Set<K> keySet()

<K, V> public static Map<K, V> newInstance(Map<K, V> m, Closure<V> initClosure)

<K, V> public static Map<K, V> newInstance(Map<K, V> m, boolean autoGrow, boolean autoShrink, Closure<V> initClosure)

@Override
public V put(K key, V value)

@Override
public void putAll(Map<? extends K, ? extends V> m)

@Override
public V remove(Object key)

@Override
public int size()

@Override
public Collection<V> values()

[Java] Class MapWithDefault<K, V>

Methods Summary

Inherited Methods Summary

Method Detail

@Overridepublic void clear()

@Overridepublic boolean containsKey(Object key)

@Overridepublic boolean containsValue(Object value)

@Overridepublic Set<Map.Entry<K, V>> entrySet()

@Overridepublic boolean equals(Object obj)

@Overridepublic V get(Object key)

@Overridepublic int hashCode()

@Overridepublic boolean isEmpty()

@Overridepublic Set<K> keySet()

<K, V> public static Map<K, V> newInstance(Map<K, V> m, Closure<V> initClosure)

<K, V> public static Map<K, V> newInstance(Map<K, V> m, boolean autoGrow, boolean autoShrink, Closure<V> initClosure)

@Overridepublic V put(K key, V value)

@Overridepublic void putAll(Map<? extends K, ? extends V> m)

@Overridepublic V remove(Object key)

@Overridepublic int size()

@Overridepublic Collection<V> values()

@Override
public void clear()

@Override
public boolean containsKey(Object key)

@Override
public boolean containsValue(Object value)

@Override
public Set<Map.Entry<K, V>> entrySet()

@Override
public boolean equals(Object obj)

@Override
public V get(Object key)

@Override
public int hashCode()

@Override
public boolean isEmpty()

@Override
public Set<K> keySet()

@Override
public V put(K key, V value)

@Override
public void putAll(Map<? extends K, ? extends V> m)

@Override
public V remove(Object key)

@Override
public int size()

@Override
public Collection<V> values()