IMap(TKey, TValue).Replace Method (TKey, TValue)

IMapTKey, TValueReplace Method (TKey, TValue)

Hazelcast .Net Client Class Library

Replaces the entry for a key only if currently mapped to some value.

Namespace: Hazelcast.Core
Assembly: Hazelcast.Net (in Hazelcast.Net.dll) Version: 3.8.1

Syntax

TValue Replace(
	TKey key,
	TValue value
)

Function Replace ( 
	key As TKey,
	value As TValue
) As TValue

TValue Replace(
	TKey key, 
	TValue value
)

abstract Replace : 
        key : 'TKey * 
        value : 'TValue -> 'TValue

Type: TValue
previous value associated with key or null if there was no mapping for key .

Remarks

Replaces the entry for a key only if currently mapped to some value. This is equivalent to

if (map.ContainsKey(key))
    return map.put(key, value);
else 
    return null;

> except that the action is performed atomically.

Warning:

This method uses GetHashCode and Equals of binary form of the key, not the actual implementations of GetHashCode and Equals defined in key's class.