Int32.Equals メソッド

リファレンス

定義

名前空間:: System

アセンブリ:: System.Runtime.dll

アセンブリ:: mscorlib.dll

アセンブリ:: netstandard.dll

重要

一部の情報は、リリース前に大きく変更される可能性があるプレリリースされた製品に関するものです。 Microsoft は、ここに記載されている情報について、明示または黙示を問わず、一切保証しません。

このインスタンスが指定した Int32 値に等しいかどうかを示す値を返します。

オーバーロード

Equals(Int32)	このインスタンスが指定した Int32 値に等しいかどうかを示す値を返します。
Equals(Object)	このインスタンスが指定されたオブジェクトに等しいかどうかを示す値を返します。

Equals(Int32)

ソース:: Int32.cs

ソース:: Int32.cs

ソース:: Int32.cs

このインスタンスが指定した Int32 値に等しいかどうかを示す値を返します。

public:
 virtual bool Equals(int obj);

public bool Equals (int obj);

override this.Equals : int -> bool

Public Function Equals (obj As Integer) As Boolean

パラメーター

obj: Int32

このインスタンスと比較する Int32 値。

戻り値

Boolean

obj の値がこのインスタンスと同じ場合は true。それ以外の場合は false。

実装

Equals(T)

注釈

このメソッドはインターフェイスを実装し、パラメーターを System.IEquatable<T> オブジェクトに変換する必要がないため、よりも Int32.Equals(Object) 少し優れたパフォーマンスを obj 発揮します。

注意 (呼び出し元)

コンパイラオーバーロードの解決では、2 つの Equals(Int32) メソッドオーバーロードの動作の明らかな違いが考慮される場合があります。引数との間のobj暗黙的な変換が定義されていて、引数がとしてObject型指定されていない場合、コンパイラは暗黙的な変換を実行し、メソッドをEquals(Int32)呼び出Int32します。それ以外の場合は、メソッドをEquals(Object)呼び出します。このメソッドは、引数がobj値でない場合は常にをInt32返falseします。次の例は、2 つのメソッドオーバーロードの動作の違いを示しています。、Int16、、およびの値のByte場合、コンパイラtrueが拡大変換を自動的に実行して UInt16 メソッドを呼び出すのに対し、2 番目の比較ではメソッドが呼び出Equals(Int32)されるため、最初の比較はをEquals(Object)返falseSByteします。

using System;

public class Example
{
   static int value = 112;

   public static void Main()
   {
      byte byte1= 112;
      Console.WriteLine("value = byte1: {0,15}", value.Equals(byte1));
      TestObjectForEquality(byte1);

      short short1 = 112;
      Console.WriteLine("value = short1: {0,15}", value.Equals(short1));
      TestObjectForEquality(short1);

      long long1 = 112;
      Console.WriteLine("value = long1: {0,17}", value.Equals(long1));
      TestObjectForEquality(long1);

      sbyte sbyte1 = 112;
      Console.WriteLine("value = sbyte1: {0,15}", value.Equals(sbyte1));
      TestObjectForEquality(sbyte1);

      ushort ushort1 = 112;
      Console.WriteLine("value = ushort1: {0,15}", value.Equals(ushort1));
      TestObjectForEquality(ushort1);

      ulong ulong1 = 112;
      Console.WriteLine("value = ulong1: {0,17}", value.Equals(ulong1));
      TestObjectForEquality(ulong1);

      decimal dec1 = 112m;
      Console.WriteLine("value = dec1: {0,20}", value.Equals(dec1));
      TestObjectForEquality(dec1);

      double dbl1 = 112;
      Console.WriteLine("value = dbl1: {0,19}", value.Equals(dbl1));
      TestObjectForEquality(dbl1);
   }

   private static void TestObjectForEquality(Object obj)
   {
      Console.WriteLine("{0} ({1}) = {2} ({3}): {4}\n",
                        value, value.GetType().Name,
                        obj, obj.GetType().Name,
                        value.Equals(obj));
   }
}
// The example displays the following output:
//       value = byte1:            True
//       112 (Int32) = 112 (Byte): False
//
//       value = short1:            True
//       112 (Int32) = 112 (Int16): False
//
//       value = long1:             False
//       112 (Int32) = 112 (Int64): False
//
//       value = sbyte1:            True
//       112 (Int32) = 112 (SByte): False
//
//       value = ushort1:            True
//       112 (Int32) = 112 (UInt16): False
//
//       value = ulong1:             False
//       112 (Int32) = 112 (UInt64): False
//
//       value = dec1:                False
//       112 (Int32) = 112 (Decimal): False
//
//       value = dbl1:               False
//       112 (Int32) = 112 (Double): False


let value = 112

let testObjectForEquality (obj: obj) =
    printfn $"{value} ({value.GetType().Name}) = {obj} ({obj.GetType().Name}): {value.Equals obj}\n"

let byte1 = 112uy
printfn $"value = byte1: {value.Equals(int byte1),15}"
testObjectForEquality byte1

let short1 = 112s
printfn $"value = short1: {value.Equals(int short1),15}"
testObjectForEquality short1

let long1 = 112L
printfn $"value = long1: {value.Equals(int long1),17}"
testObjectForEquality long1

let sbyte1 = 112y
printfn $"value = sbyte1: {value.Equals(int sbyte1),15}"
testObjectForEquality sbyte1

let ushort1 = 112us
printfn $"value = ushort1: {value.Equals(int ushort1),15}"
testObjectForEquality ushort1

let ulong1 = 112uL
printfn $"value = ulong1: {value.Equals(int ulong1),17}"
testObjectForEquality ulong1

let dec1 = 112M
printfn $"value = dec1: {value.Equals(int dec1),20}"
testObjectForEquality dec1

let dbl1 = 112.0
printfn $"value = dbl1: {value.Equals(int dbl1),19}"
testObjectForEquality dbl1


// The example displays the following output:
//       value = byte1:            True
//       112 (Int32) = 112 (Byte): False
//
//       value = short1:            True
//       112 (Int32) = 112 (Int16): False
//
//       value = long1:             False
//       112 (Int32) = 112 (Int64): False
//
//       value = sbyte1:            True
//       112 (Int32) = 112 (SByte): False
//
//       value = ushort1:            True
//       112 (Int32) = 112 (UInt16): False
//
//       value = ulong1:             False
//       112 (Int32) = 112 (UInt64): False
//
//       value = dec1:                False
//       112 (Int32) = 112 (Decimal): False
//
//       value = dbl1:               False
//       112 (Int32) = 112 (Double): False

Module Example
   Dim value As Int32 = 112
   
   Public Sub Main()
      Dim byte1 As Byte = 112
      Console.WriteLine("value = byte1: {0,15}", value.Equals(byte1))
      TestObjectForEquality(byte1)
      
      Dim short1 As Short = 112
      Console.WriteLine("value = short1: {0,15}", value.Equals(short1))
      TestObjectForEquality(short1)

      Dim long1 As Long = 112
      Console.WriteLine("value = long1: {0,17}", value.Equals(long1))
      TestObjectForEquality(long1)

      Dim sbyte1 As SByte = 112
      Console.WriteLine("value = sbyte1: {0,15}", value.Equals(sbyte1))
      TestObjectForEquality(sbyte1)
      
      Dim ushort1 As UShort = 112
      Console.WriteLine("value = ushort1: {0,15}", value.Equals(ushort1))
      TestObjectForEquality(ushort1)

      Dim ulong1 As ULong = 112
      Console.WriteLine("value = ulong1: {0,17}", value.Equals(ulong1))
      TestObjectForEquality(ulong1)

      Dim dec1 As Decimal = 112d
      Console.WriteLine("value = dec1: {0,20}", value.Equals(dec1))
      TestObjectForEquality(dec1)

      Dim dbl1 As Double = 112
      Console.WriteLine("value = dbl1: {0,19}", value.Equals(dbl1))
      TestObjectForEquality(dbl1)
   End Sub
   
   Private Sub TestObjectForEquality(obj As Object)
      Console.WriteLine("{0} ({1}) = {2} ({3}): {4}",
                        value, value.GetType().Name,
                        obj, obj.GetType().Name,
                        value.Equals(obj))
      Console.WriteLine()
   End Sub
End Module
' The example displays the following output:
'       value = byte1:            True
'       112 (Int32) = 112 (Byte): False
'
'       value = short1:            True
'       112 (Int32) = 112 (Int16): False
'
'       value = long1:             False
'       112 (Int32) = 112 (Int64): False
'
'       value = sbyte1:            True
'       112 (Int32) = 112 (SByte): False
'
'       value = ushort1:            True
'       112 (Int32) = 112 (UInt16): False
'
'       value = ulong1:             False
'       112 (Int32) = 112 (UInt64): False
'
'       value = dec1:                False
'       112 (Int32) = 112 (Decimal): False
'
'       value = dbl1:               False
'       112 (Int32) = 112 (Double): False

適用対象

Equals(Object)

ソース:: Int32.cs

ソース:: Int32.cs

ソース:: Int32.cs

このインスタンスが指定されたオブジェクトに等しいかどうかを示す値を返します。

public:
 override bool Equals(System::Object ^ obj);

public override bool Equals (object obj);

public override bool Equals (object? obj);

override this.Equals : obj -> bool

Public Overrides Function Equals (obj As Object) As Boolean

パラメーター

obj: Object

このインスタンスと比較するオブジェクト。

戻り値

Boolean

obj が Int32 のインスタンスで、このインスタンスの値に等しい場合は true。それ以外の場合は false。

例

次の例は、のコンテキストでののEquals使用を示しています。2 つのint値を比較し、同じ数値をtrue表す場合は false を返します。そうでない場合はを返Int32します。

Int32 myVariable1 = 60;
Int32 myVariable2 = 60;

// Get and display the declaring type.
Console::WriteLine( "\nType of 'myVariable1' is '{0}' and  value is : {1}", myVariable1.GetType(), myVariable1 );
Console::WriteLine( "Type of 'myVariable2' is '{0}' and  value is : {1}", myVariable2.GetType(), myVariable2 );

// Compare 'myVariable1' instance with 'myVariable2' Object.
if ( myVariable1.Equals( myVariable2 ) )
      Console::WriteLine( "\nStructures 'myVariable1' and 'myVariable2' are equal" );
else
      Console::WriteLine( "\nStructures 'myVariable1' and 'myVariable2' are not equal" );

Int32 myVariable1 = 60;
Int32 myVariable2 = 60;

// Get and display the declaring type.
Console.WriteLine("\nType of 'myVariable1' is '{0}' and"+
     " value is :{1}",myVariable1.GetType(), myVariable1);
Console.WriteLine("Type of 'myVariable2' is '{0}' and"+
     " value is :{1}",myVariable2.GetType(), myVariable2);

// Compare 'myVariable1' instance with 'myVariable2' Object.
if( myVariable1.Equals( myVariable2 ) )
   Console.WriteLine( "\nStructures 'myVariable1' and "+
         "'myVariable2' are equal");
else
   Console.WriteLine( "\nStructures 'myVariable1' and "+
         "'myVariable2' are not equal");

let myVariable1 = 60
let myVariable2 = 60

// Get and display the declaring type.
printfn $"\nType of 'myVariable1' is '{myVariable1.GetType()}' and value is: {myVariable1}"
printfn $"Type of 'myVariable2' is '{myVariable2.GetType()}' and value is: {myVariable2}"

// Compare 'myVariable1' instance with 'myVariable2' Object.
if myVariable1.Equals myVariable2 then
    printfn "\nStructures 'myVariable1' and 'myVariable2' are equal"
else
    printfn "\nStructures 'myVariable1' and 'myVariable2' are not equal"

Dim myVariable1 As Int32 = 60
Dim myVariable2 As Int32 = 60

' Get and display the declaring type.
Console.WriteLine(ControlChars.NewLine + "Type of 'myVariable1' is '{0}' and" +  _
         " value is :{1}", myVariable1.GetType().ToString(), myVariable1.ToString())
Console.WriteLine("Type of 'myVariable2' is '{0}' and" +  _
         " value is :{1}", myVariable2.GetType().ToString(), myVariable2.ToString())

' Compare 'myVariable1' instance with 'myVariable2' Object.
If myVariable1.Equals(myVariable2) Then
   Console.WriteLine(ControlChars.NewLine + "Structures 'myVariable1' and " +  _
            "'myVariable2' are equal")
Else
   Console.WriteLine(ControlChars.NewLine + "Structures 'myVariable1' and " + _
         "'myVariable2' are not equal")
End If

注意 (呼び出し元)

using System;

public class Example
{
   static int value = 112;

   public static void Main()
   {
      byte byte1= 112;
      Console.WriteLine("value = byte1: {0,15}", value.Equals(byte1));
      TestObjectForEquality(byte1);

      short short1 = 112;
      Console.WriteLine("value = short1: {0,15}", value.Equals(short1));
      TestObjectForEquality(short1);

      long long1 = 112;
      Console.WriteLine("value = long1: {0,17}", value.Equals(long1));
      TestObjectForEquality(long1);

      sbyte sbyte1 = 112;
      Console.WriteLine("value = sbyte1: {0,15}", value.Equals(sbyte1));
      TestObjectForEquality(sbyte1);

      ushort ushort1 = 112;
      Console.WriteLine("value = ushort1: {0,15}", value.Equals(ushort1));
      TestObjectForEquality(ushort1);

      ulong ulong1 = 112;
      Console.WriteLine("value = ulong1: {0,17}", value.Equals(ulong1));
      TestObjectForEquality(ulong1);

      decimal dec1 = 112m;
      Console.WriteLine("value = dec1: {0,20}", value.Equals(dec1));
      TestObjectForEquality(dec1);

      double dbl1 = 112;
      Console.WriteLine("value = dbl1: {0,19}", value.Equals(dbl1));
      TestObjectForEquality(dbl1);
   }

   private static void TestObjectForEquality(Object obj)
   {
      Console.WriteLine("{0} ({1}) = {2} ({3}): {4}\n",
                        value, value.GetType().Name,
                        obj, obj.GetType().Name,
                        value.Equals(obj));
   }
}
// The example displays the following output:
//       value = byte1:            True
//       112 (Int32) = 112 (Byte): False
//
//       value = short1:            True
//       112 (Int32) = 112 (Int16): False
//
//       value = long1:             False
//       112 (Int32) = 112 (Int64): False
//
//       value = sbyte1:            True
//       112 (Int32) = 112 (SByte): False
//
//       value = ushort1:            True
//       112 (Int32) = 112 (UInt16): False
//
//       value = ulong1:             False
//       112 (Int32) = 112 (UInt64): False
//
//       value = dec1:                False
//       112 (Int32) = 112 (Decimal): False
//
//       value = dbl1:               False
//       112 (Int32) = 112 (Double): False


let value = 112

let testObjectForEquality (obj: obj) =
    printfn $"{value} ({value.GetType().Name}) = {obj} ({obj.GetType().Name}): {value.Equals obj}\n"

let byte1 = 112uy
printfn $"value = byte1: {value.Equals(int byte1),15}"
testObjectForEquality byte1

let short1 = 112s
printfn $"value = short1: {value.Equals(int short1),15}"
testObjectForEquality short1

let long1 = 112L
printfn $"value = long1: {value.Equals(int long1),17}"
testObjectForEquality long1

let sbyte1 = 112y
printfn $"value = sbyte1: {value.Equals(int sbyte1),15}"
testObjectForEquality sbyte1

let ushort1 = 112us
printfn $"value = ushort1: {value.Equals(int ushort1),15}"
testObjectForEquality ushort1

let ulong1 = 112uL
printfn $"value = ulong1: {value.Equals(int ulong1),17}"
testObjectForEquality ulong1

let dec1 = 112M
printfn $"value = dec1: {value.Equals(int dec1),20}"
testObjectForEquality dec1

let dbl1 = 112.0
printfn $"value = dbl1: {value.Equals(int dbl1),19}"
testObjectForEquality dbl1


// The example displays the following output:
//       value = byte1:            True
//       112 (Int32) = 112 (Byte): False
//
//       value = short1:            True
//       112 (Int32) = 112 (Int16): False
//
//       value = long1:             False
//       112 (Int32) = 112 (Int64): False
//
//       value = sbyte1:            True
//       112 (Int32) = 112 (SByte): False
//
//       value = ushort1:            True
//       112 (Int32) = 112 (UInt16): False
//
//       value = ulong1:             False
//       112 (Int32) = 112 (UInt64): False
//
//       value = dec1:                False
//       112 (Int32) = 112 (Decimal): False
//
//       value = dbl1:               False
//       112 (Int32) = 112 (Double): False

Module Example
   Dim value As Int32 = 112
   
   Public Sub Main()
      Dim byte1 As Byte = 112
      Console.WriteLine("value = byte1: {0,15}", value.Equals(byte1))
      TestObjectForEquality(byte1)
      
      Dim short1 As Short = 112
      Console.WriteLine("value = short1: {0,15}", value.Equals(short1))
      TestObjectForEquality(short1)

      Dim long1 As Long = 112
      Console.WriteLine("value = long1: {0,17}", value.Equals(long1))
      TestObjectForEquality(long1)

      Dim sbyte1 As SByte = 112
      Console.WriteLine("value = sbyte1: {0,15}", value.Equals(sbyte1))
      TestObjectForEquality(sbyte1)
      
      Dim ushort1 As UShort = 112
      Console.WriteLine("value = ushort1: {0,15}", value.Equals(ushort1))
      TestObjectForEquality(ushort1)

      Dim ulong1 As ULong = 112
      Console.WriteLine("value = ulong1: {0,17}", value.Equals(ulong1))
      TestObjectForEquality(ulong1)

      Dim dec1 As Decimal = 112d
      Console.WriteLine("value = dec1: {0,20}", value.Equals(dec1))
      TestObjectForEquality(dec1)

      Dim dbl1 As Double = 112
      Console.WriteLine("value = dbl1: {0,19}", value.Equals(dbl1))
      TestObjectForEquality(dbl1)
   End Sub
   
   Private Sub TestObjectForEquality(obj As Object)
      Console.WriteLine("{0} ({1}) = {2} ({3}): {4}",
                        value, value.GetType().Name,
                        obj, obj.GetType().Name,
                        value.Equals(obj))
      Console.WriteLine()
   End Sub
End Module
' The example displays the following output:
'       value = byte1:            True
'       112 (Int32) = 112 (Byte): False
'
'       value = short1:            True
'       112 (Int32) = 112 (Int16): False
'
'       value = long1:             False
'       112 (Int32) = 112 (Int64): False
'
'       value = sbyte1:            True
'       112 (Int32) = 112 (SByte): False
'
'       value = ushort1:            True
'       112 (Int32) = 112 (UInt16): False
'
'       value = ulong1:             False
'       112 (Int32) = 112 (UInt64): False
'
'       value = dec1:                False
'       112 (Int32) = 112 (Decimal): False
'
'       value = dbl1:               False
'       112 (Int32) = 112 (Double): False

こちらもご覧ください

CompareTo(Object)

適用対象

次の方法で共有

Int32.Equals メソッド

定義

オーバーロード

Equals(Int32)

パラメーター

戻り値

実装

注釈

注意 (呼び出し元)

適用対象

Equals(Object)

パラメーター

戻り値

例

注意 (呼び出し元)

こちらもご覧ください

適用対象

その他のリソース