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M_CodeJam_Collections_DictionaryExtensions_GetValueOrDefault__3_4

Andrew Koryavchenko edited this page Jun 17, 2018 · 5 revisions

DictionaryExtensions.GetValueOrDefault(TKey, TValue, TResult) Method (Dictionary(TKey, TValue), TKey, Func(TKey, TValue, TResult), Func(TKey, TResult))

Returns value associated with key, or value returned by defaultValueFactory if key does not exists in dictionary

Namespace: CodeJam.Collections
Assembly: CodeJam (in CodeJam.dll) Version: 2.1.0.0

Syntax

C#

public static TResult GetValueOrDefault<TKey, TValue, TResult>(
	this Dictionary<TKey, TValue> dictionary,
	TKey key,
	Func<TKey, TValue, TResult> resultSelector,
	Func<TKey, TResult> defaultValueFactory
)

VB

<ExtensionAttribute>
Public Shared Function GetValueOrDefault(Of TKey, TValue, TResult) ( 
	dictionary As Dictionary(Of TKey, TValue),
	key As TKey,
	resultSelector As Func(Of TKey, TValue, TResult),
	defaultValueFactory As Func(Of TKey, TResult)
) As TResult

F#

[<ExtensionAttribute>]
static member GetValueOrDefault : 
        dictionary : Dictionary<'TKey, 'TValue> * 
        key : 'TKey * 
        resultSelector : Func<'TKey, 'TValue, 'TResult> * 
        defaultValueFactory : Func<'TKey, 'TResult> -> 'TResult 

Parameters

 

dictionary
Type: System.Collections.Generic.Dictionary(TKey, TValue)
The dictionary.
key
Type: TKey
The key.
resultSelector
Type: System.Func(TKey, TValue, TResult)
Function to select result.
defaultValueFactory
Type: System.Func(TKey, TResult)
Function to return default value.

Type Parameters

 

TKey
The type of the key.
TValue
The type of the value.
TResult
Result type.

Return Value

Type: TResult
Value, associated with the key, or value returned by defaultValueFactory if key does not exists in dictionary

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type Dictionary(TKey, TValue). When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

See Also

Reference

DictionaryExtensions Class
GetValueOrDefault Overload
CodeJam.Collections Namespace

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