ImmutableDictionary.GetValueOrDefault 方法

定义

重载

GetValueOrDefault<TKey,TValue>(IImmutableDictionary<TKey,TValue>, TKey, TValue)

如果字典中存在匹配的键,则获取给定键的值。

GetValueOrDefault<TKey,TValue>(IImmutableDictionary<TKey,TValue>, TKey)

如果字典中存在匹配的键,则获取给定键的值。

GetValueOrDefault<TKey,TValue>(IImmutableDictionary<TKey,TValue>, TKey, TValue)

Source:
ImmutableDictionary.cs
Source:
ImmutableDictionary.cs
Source:
ImmutableDictionary.cs

如果字典中存在匹配的键,则获取给定键的值。

public:
generic <typename TKey, typename TValue>
[System::Runtime::CompilerServices::Extension]
 static TValue GetValueOrDefault(System::Collections::Immutable::IImmutableDictionary<TKey, TValue> ^ dictionary, TKey key, TValue defaultValue);
public static TValue GetValueOrDefault<TKey,TValue> (this System.Collections.Immutable.IImmutableDictionary<TKey,TValue> dictionary, TKey key, TValue defaultValue);
static member GetValueOrDefault : System.Collections.Immutable.IImmutableDictionary<'Key, 'Value> * 'Key * 'Value -> 'Value
<Extension()>
Public Function GetValueOrDefault(Of TKey, TValue) (dictionary As IImmutableDictionary(Of TKey, TValue), key As TKey, defaultValue As TValue) As TValue

类型参数

TKey

键的类型。

TValue

值的类型。

参数

dictionary
IImmutableDictionary<TKey,TValue>

要从中检索值的字典。

key
TKey

要搜索的键。

defaultValue
TValue

在字典中找不到匹配键时返回的默认值。

返回

TValue

该键的值;如果找不到匹配的键,则为 defaultValue

适用于

GetValueOrDefault<TKey,TValue>(IImmutableDictionary<TKey,TValue>, TKey)

Source:
ImmutableDictionary.cs
Source:
ImmutableDictionary.cs
Source:
ImmutableDictionary.cs

如果字典中存在匹配的键,则获取给定键的值。

public:
generic <typename TKey, typename TValue>
[System::Runtime::CompilerServices::Extension]
 static TValue GetValueOrDefault(System::Collections::Immutable::IImmutableDictionary<TKey, TValue> ^ dictionary, TKey key);
public static TValue GetValueOrDefault<TKey,TValue> (this System.Collections.Immutable.IImmutableDictionary<TKey,TValue> dictionary, TKey key);
public static TValue? GetValueOrDefault<TKey,TValue> (this System.Collections.Immutable.IImmutableDictionary<TKey,TValue> dictionary, TKey key);
static member GetValueOrDefault : System.Collections.Immutable.IImmutableDictionary<'Key, 'Value> * 'Key -> 'Value
<Extension()>
Public Function GetValueOrDefault(Of TKey, TValue) (dictionary As IImmutableDictionary(Of TKey, TValue), key As TKey) As TValue

类型参数

TKey

键的类型。

TValue

值的类型。

参数

dictionary
IImmutableDictionary<TKey,TValue>

要从中检索值的字典。

key
TKey

要搜索的键。

返回

TValue

该键的值;如果找不到匹配的键,则为 default(TValue)

适用于