DictionaryExtensions.GetValueOrDefault(TKey, TValue) Method (IDictionary(TKey, TValue), TKey, Func(TValue), Boolean)

DictionaryExtensionsGetValueOrDefaultTKey, TValue Method (IDictionaryTKey, TValue, TKey, FuncTValue, Boolean)

Returns the value associated with key in the dictionary. If not present, adds the default value to the dictionary and returns that value.

Namespace: Bio.Util
Assembly: Bio.Core (in Bio.Core.dll) Version: 2.0.0.1 (2.0.0.1)

Syntax

C++

Copy

public static TValue GetValueOrDefault<TKey, TValue>(
	this IDictionary<TKey, TValue> dictionary,
	TKey key,
	Func<TValue> defaultValueConstructor,
	bool insertIfMissing = true
)

<ExtensionAttribute>
Public Shared Function GetValueOrDefault(Of TKey, TValue) ( 
	dictionary As IDictionary(Of TKey, TValue),
	key As TKey,
	defaultValueConstructor As Func(Of TValue),
	Optional insertIfMissing As Boolean = true
) As TValue

public:
[ExtensionAttribute]
generic<typename TKey, typename TValue>
static TValue GetValueOrDefault(
	IDictionary<TKey, TValue>^ dictionary, 
	TKey key, 
	Func<TValue>^ defaultValueConstructor, 
	bool insertIfMissing = true
)

[<ExtensionAttribute>]
static member GetValueOrDefault : 
        dictionary : IDictionary<'TKey, 'TValue> * 
        key : 'TKey * 
        defaultValueConstructor : Func<'TValue> * 
        ?insertIfMissing : bool 
(* Defaults:
        let _insertIfMissing = defaultArg insertIfMissing true
*)
-> 'TValue

Parameters

dictionary: Type: System.Collections.GenericIDictionaryTKey, TValue
[Missing <param name="dictionary"/> documentation for "M:Bio.Util.DictionaryExtensions.GetValueOrDefault``2(System.Collections.Generic.IDictionary{``0,``1},``0,System.Func{``1},System.Boolean)"]
key: Type: TKey
[Missing <param name="key"/> documentation for "M:Bio.Util.DictionaryExtensions.GetValueOrDefault``2(System.Collections.Generic.IDictionary{``0,``1},``0,System.Func{``1},System.Boolean)"]
defaultValueConstructor: Type: SystemFuncTValue
[Missing <param name="defaultValueConstructor"/> documentation for "M:Bio.Util.DictionaryExtensions.GetValueOrDefault``2(System.Collections.Generic.IDictionary{``0,``1},``0,System.Func{``1},System.Boolean)"]
insertIfMissing (Optional): Type: SystemBoolean
[Missing <param name="insertIfMissing"/> documentation for "M:Bio.Util.DictionaryExtensions.GetValueOrDefault``2(System.Collections.Generic.IDictionary{``0,``1},``0,System.Func{``1},System.Boolean)"]

Type Parameters

TKey: [Missing <typeparam name="TKey"/> documentation for "M:Bio.Util.DictionaryExtensions.GetValueOrDefault``2(System.Collections.Generic.IDictionary{``0,``1},``0,System.Func{``1},System.Boolean)"]
TValue: [Missing <typeparam name="TValue"/> documentation for "M:Bio.Util.DictionaryExtensions.GetValueOrDefault``2(System.Collections.Generic.IDictionary{``0,``1},``0,System.Func{``1},System.Boolean)"]

Return Value

Type: TValue

[Missing <returns> documentation for "M:Bio.Util.DictionaryExtensions.GetValueOrDefault``2(System.Collections.Generic.IDictionary{``0,``1},``0,System.Func{``1},System.Boolean)"]

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IDictionaryTKey, 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).

Reference

DictionaryExtensions Class

GetValueOrDefault Overload

Bio.Util Namespace