ImmutableArrayExtensions.First Method

Definition

Namespace:

System.Linq

Assembly:

System.Collections.Immutable.dll

Package:

System.Collections.Immutable v9.0.0-preview.3.24172.9

Overloads

First<T>(ImmutableArray<T>)	Returns the first element in an array.
First<T>(ImmutableArray<T>.Builder)	Returns the first element in the collection.
First<T>(ImmutableArray<T>, Func<T,Boolean>)	Returns the first element in a sequence that satisfies a specified condition.

First<T>(ImmutableArray<T>)

Source:

ImmutableArrayExtensions.cs

Returns the first element in an array.

public:
generic <typename T>
[System::Runtime::CompilerServices::Extension]
 static T First(System::Collections::Immutable::ImmutableArray<T> immutableArray);

public static T First<T> (this System.Collections.Immutable.ImmutableArray<T> immutableArray);

static member First : System.Collections.Immutable.ImmutableArray<'T> -> 'T

<Extension()>
Public Function First(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 to get an item from.

Returns

T

The first item in the array.

Exceptions

InvalidOperationException

If the array is empty.

First<T>(ImmutableArray<T>.Builder)

Source:

ImmutableArrayExtensions.cs

Returns the first element in the collection.

public:
generic <typename T>
[System::Runtime::CompilerServices::Extension]
 static T First(System::Collections::Immutable::ImmutableArray<T>::Builder ^ builder);

public static T First<T> (this System.Collections.Immutable.ImmutableArray<T>.Builder builder);

static member First : System.Collections.Immutable.ImmutableArray<'T>.Builder -> 'T

<Extension()>
Public Function First(Of T) (builder As ImmutableArray(Of T).Builder) As T

Type Parameters

T

The type of items in the array.

Parameters

builder

ImmutableArray<T>.Builder

The builder to retrieve an item from.

Returns

T

The first item in the list.

Exceptions

InvalidOperationException

If the array is empty.

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

Source:

ImmutableArrayExtensions.cs

Returns the first element in a sequence that satisfies a specified condition.

public:
generic <typename T>
[System::Runtime::CompilerServices::Extension]
 static T First(System::Collections::Immutable::ImmutableArray<T> immutableArray, Func<T, bool> ^ predicate);

public static T First<T> (this System.Collections.Immutable.ImmutableArray<T> immutableArray, Func<T,bool> predicate);

static member First : System.Collections.Immutable.ImmutableArray<'T> * Func<'T, bool> -> 'T

<Extension()>
Public Function First(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 an item from.

predicate

Func<T,Boolean>

The delegate that defines the conditions of the element to search for.

Returns

T

The first item in the list if it meets the condition specified by predicate.

Exceptions

InvalidOperationException

If the array is empty.