Enumerable.Reverse(IEnumerable<TSource>) Enumerable.Reverse(IEnumerable<TSource>) Enumerable.Reverse(IEnumerable<TSource>) Enumerable.Reverse(IEnumerable<TSource>) Method

定義

シーケンスの要素の順序を反転させます。Inverts the order of the elements in a sequence.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static System::Collections::Generic::IEnumerable<TSource> ^ Reverse(System::Collections::Generic::IEnumerable<TSource> ^ source);
public static System.Collections.Generic.IEnumerable<TSource> Reverse<TSource> (this System.Collections.Generic.IEnumerable<TSource> source);
static member Reverse : seq<'Source> -> seq<'Source>
<Extension()>
Public Function Reverse(Of TSource) (source As IEnumerable(Of TSource)) As IEnumerable(Of TSource)

型パラメーター

TSource

source の要素の型。The type of the elements of source.

パラメーター

source
IEnumerable<TSource>

反転させる値のシーケンス。A sequence of values to reverse.

戻り値

IEnumerable<TSource>

要素が入力シーケンスの要素に逆順で対応しているシーケンス。A sequence whose elements correspond to those of the input sequence in reverse order.

例外

次のコード例は、使用する方法を示しますReverse配列内の要素の順序を逆にします。The following code example demonstrates how to use Reverse to reverse the order of elements in an array.

char[] apple = { 'a', 'p', 'p', 'l', 'e' };

char[] reversed = apple.Reverse().ToArray();

foreach (char chr in reversed)
{
    Console.Write(chr + " ");
}
Console.WriteLine();

/*
 This code produces the following output:

 e l p p a
*/
' Create a List of Char values.
Dim appleLetters As New List(Of Char)(New Char() _
                                  {"a"c, "P"c, "P"c, "L"c, "E"c})

' Reverse the order of the elements in the list.
' (We have to call AsEnumerable() in order to
' use System.Linq.Enumerable's Reverse() method.
Dim reversed() As Char =
appleLetters.AsEnumerable().Reverse().ToArray()

Dim output As New System.Text.StringBuilder
For Each chr As Char In reversed
    output.Append(chr & " ")
Next

' Display the output.
MsgBox(output.ToString())

' This code produces the following output:
'
' E L P P a

注釈

このメソッドは、遅延実行を使用して実装されます。This method is implemented by using deferred execution. 即時の戻り値は、操作を実行するために必要なすべての情報を格納するオブジェクトです。The immediate return value is an object that stores all the information that is required to perform the action. か、呼び出すことによって、オブジェクトが列挙されるまで、このメソッドによって表されるクエリは実行されません、GetEnumeratorメソッドを使用して直接またはforeachVisual C# またはFor EachVisual Basic で。The query represented by this method is not executed until the object is enumerated either by calling its GetEnumerator method directly or by using foreach in Visual C# or For Each in Visual Basic.

異なりOrderBy、このメソッドの並べ替え順序が決定自体実際の値は考慮されません。Unlike OrderBy, this sorting method does not consider the actual values themselves in determining the order. はなく、その要素を返すだけ生成元となる逆の順序で、基になるソースによって。Rather, it just returns the elements in the reverse order from which they are produced by the underlying source.

適用対象