M_CodeJam_Collections_DictionaryExtensions_GetValueOrDefault__3_10

DictionaryExtensions.GetValueOrDefault(TKey, TValue, TResult) Method (IReadOnlyDictionary(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 IReadOnlyDictionary<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 IReadOnlyDictionary(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 : IReadOnlyDictionary<'TKey, 'TValue> * 
        key : 'TKey * 
        resultSelector : Func<'TKey, 'TValue, 'TResult> * 
        defaultValueFactory : Func<'TKey, 'TResult> -> 'TResult 

Parameters

 

dictionary

Type: System.Collections.Generic.IReadOnlyDictionary(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 IReadOnlyDictionary(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