ImmutableArrayExtensions.SingleOrDefault Method

  • Reference

Definition

Namespace:
System.Linq
Assembly:
System.Collections.Immutable.dll
Package:
System.Collections.Immutable v8.0.0
Package:
System.Collections.Immutable v9.0.0-rc.2.24473.5

Overloads

SingleOrDefault<T>(ImmutableArray<T>)

Returns the only element of the array, or a default value if the sequence is empty; this method throws an exception if there is more than one element in the sequence.
SingleOrDefault<T>(ImmutableArray<T>, Func<T,Boolean>)

Returns the only element of a sequence that satisfies a specified condition or a default value if no such element exists; this method throws an exception if more than one element satisfies the condition.

SingleOrDefault<T>(ImmutableArray<T>)

Source:
ImmutableArrayExtensions.cs
Source:
ImmutableArrayExtensions.cs
Source:
ImmutableArrayExtensions.cs

Returns the only element of the array, or a default value if the sequence is empty; this method throws an exception if there is more than one element in the sequence.

public:
generic <typename T>
[System::Runtime::CompilerServices::Extension]
 static T SingleOrDefault(System::Collections::Immutable::ImmutableArray<T> immutableArray);
public static T SingleOrDefault<T> (this System.Collections.Immutable.ImmutableArray<T> immutableArray);
public static T? SingleOrDefault<T> (this System.Collections.Immutable.ImmutableArray<T> immutableArray);
static member SingleOrDefault : System.Collections.Immutable.ImmutableArray<'T> -> 'T
<Extension()>
Public Function SingleOrDefault(Of T) (immutableArray As ImmutableArray(Of T)) As T

Type Parameters

T

The type of element contained by the collection.

Parameters

immutableArray
ImmutableArray<T>

The array.

Returns

T

The element in the array, or the default value if the array is empty.

Exceptions

InvalidOperationException

source contains more than one element.

Applies to

SingleOrDefault<T>(ImmutableArray<T>, Func<T,Boolean>)

Source:
ImmutableArrayExtensions.cs
Source:
ImmutableArrayExtensions.cs
Source:
ImmutableArrayExtensions.cs

Returns the only element of a sequence that satisfies a specified condition or a default value if no such element exists; this method throws an exception if more than one element satisfies the condition.

public:
generic <typename T>
[System::Runtime::CompilerServices::Extension]
 static T SingleOrDefault(System::Collections::Immutable::ImmutableArray<T> immutableArray, Func<T, bool> ^ predicate);
public static T SingleOrDefault<T> (this System.Collections.Immutable.ImmutableArray<T> immutableArray, Func<T,bool> predicate);
public static T? SingleOrDefault<T> (this System.Collections.Immutable.ImmutableArray<T> immutableArray, Func<T,bool> predicate);
static member SingleOrDefault : System.Collections.Immutable.ImmutableArray<'T> * Func<'T, bool> -> 'T
<Extension()>
Public Function SingleOrDefault(Of T) (immutableArray As ImmutableArray(Of T), predicate As Func(Of T, Boolean)) As T

Type Parameters

T

The type of element contained by the collection.

Parameters

immutableArray
ImmutableArray<T>

The array to get the element from.

predicate
Func<T,Boolean>

The condition the element must satisfy.

Returns

T

The element if it satisfies the specified condition; otherwise the default element.

Exceptions

InvalidOperationException

More than one element satisfies the condition in predicate.

Applies to