共用方式為


Tuple<T1,T2,T3,T4,T5,T6,T7,TRest>.IComparable.CompareTo(Object) 方法

定義

將目前的 Tuple<T1,T2,T3,T4,T5,T6,T7,TRest> 物件與指定的物件比較,並傳回可指出目前物件在排序次序中,是否在指定物件之前、之後或者相同之位置的整數。

 virtual int System.IComparable.CompareTo(System::Object ^ obj) = IComparable::CompareTo;
int IComparable.CompareTo (object obj);
abstract member System.IComparable.CompareTo : obj -> int
override this.System.IComparable.CompareTo : obj -> int
Function CompareTo (obj As Object) As Integer Implements IComparable.CompareTo

參數

obj
Object

要與目前執行個體比較的物件。

傳回

Int32

帶正負號的整數,可指出此執行個體以及排序次序中 obj 的相對位置,如下表所示。

描述
負整數 這個執行個體位於 obj 之前。
這個執行個體和 obj 的排序位置相同。
正整數 這個執行個體位於 obj 之後。

實作

例外狀況

範例

下列範例會建立八進位陣列,其元件是包含質數範圍的整數。 此範例會以未排序的順序顯示陣列的專案、排序陣列,然後依排序次序顯示陣列。 輸出顯示陣列已依 Item1 排序,或 Tuple 的第一個元件。 請注意,此範例不會直接呼叫 IComparable.CompareTo(Object) 方法。 這個方法是由 陣列中每個元素的 方法隱含 Sort(Array) 呼叫。

using System;

public class Example
{
   public static void Main()
   {
      // Create array of 8-tuple objects containing prime numbers.
      Tuple<Int32, Int32, Int32, Int32, Int32, Int32, Int32, Tuple<Int32>>[] primes = 
                     { new Tuple<Int32, Int32, Int32, Int32, Int32, Int32, Int32, 
                           Tuple<Int32>>(2, 3, 5, 7, 11, 13, 17, new Tuple<Int32>(19)),
                       new Tuple<Int32, Int32, Int32, Int32, Int32, Int32, Int32, 
                           Tuple<Int32>>(23, 29, 31, 37, 41, 43, 47, new Tuple<Int32>(55)), 
                       new Tuple<Int32, Int32, Int32, Int32, Int32, Int32, Int32, 
                           Tuple<Int32>>(3, 2, 5, 7, 11, 13, 17, new Tuple<Int32>(19)) };
      // Display 8-tuples in unsorted order.
      foreach (var prime in primes)
         Console.WriteLine(prime.ToString());
      Console.WriteLine();
      
      // Sort the array and display its 8-tuples.
      Array.Sort(primes);
      foreach (var prime in primes)
         Console.WriteLine(prime.ToString());
   }
}
// The example displays the following output:
//       (2, 3, 5, 7, 11, 13, 17, 19)
//       (23, 29, 31, 37, 41, 43, 47, 55)
//       (3, 2, 5, 7, 11, 13, 17, 19)
//       
//       (2, 3, 5, 7, 11, 13, 17, 19)
//       (3, 2, 5, 7, 11, 13, 17, 19)
//       (23, 29, 31, 37, 41, 43, 47, 55)
open System

// Create array of 8-tuple objects containing prime numbers.
let primes = 
    [| new Tuple<Int32, Int32, Int32, Int32, Int32, Int32, Int32, 
           Tuple<Int32>>(2, 3, 5, 7, 11, 13, 17, new Tuple<Int32>(19))
       new Tuple<Int32, Int32, Int32, Int32, Int32, Int32, Int32,
           Tuple<Int32>>(23, 29, 31, 37, 41, 43, 47, new Tuple<Int32>(55)) 
       new Tuple<Int32, Int32, Int32, Int32, Int32, Int32, Int32,
           Tuple<Int32>>(3, 2, 5, 7, 11, 13, 17, new Tuple<Int32>(19)) |]
// Display 8-tuples in unsorted order.
for prime in primes do
    printfn $"{prime}"
printfn ""

// Sort the array and display its 8-tuples.
Array.Sort primes
for prime in primes do
    printfn $"{prime}"
// The example displays the following output:
//       (2, 3, 5, 7, 11, 13, 17, 19)
//       (23, 29, 31, 37, 41, 43, 47, 55)
//       (3, 2, 5, 7, 11, 13, 17, 19)
//       
//       (2, 3, 5, 7, 11, 13, 17, 19)
//       (3, 2, 5, 7, 11, 13, 17, 19)
//       (23, 29, 31, 37, 41, 43, 47, 55)
Module Example
   Public Sub Main()
      ' Create array of 8-tuple objects containing prime numbers.
      Dim primes() = { New Tuple(Of Int32, Int32, Int32, Int32, Int32, Int32, Int32, 
                           Tuple(Of Int32)) (2, 3, 5, 7, 11, 13, 17, 
                           New Tuple(Of Int32)(19)),
                       New Tuple(Of Int32, Int32, Int32, Int32, Int32, Int32, Int32, 
                           Tuple(Of Int32)) (23, 29, 31, 37, 41, 43, 47, 
                           New Tuple(Of Int32)(55)), 
                       New Tuple(Of Int32, Int32, Int32, Int32, Int32, Int32, Int32, 
                           Tuple(Of Int32)) (3, 2, 5, 7, 11, 13, 17, 
                           New Tuple(Of Int32)(19)) }
      ' Display 8-tuples in unsorted order.
      For Each prime In primes
         Console.WriteLine(prime.ToString())
      Next
      Console.WriteLine()
      
      ' Sort the array and display its 8-tuples.
      Array.Sort(primes)
      For Each prime In primes
         Console.WriteLine(prime.ToString())
      Next
   End Sub
End Module
' The example displays the following output:
'       (2, 3, 5, 7, 11, 13, 17, 19)
'       (23, 29, 31, 37, 41, 43, 47, 55)
'       (3, 2, 5, 7, 11, 13, 17, 19)
'       
'       (2, 3, 5, 7, 11, 13, 17, 19)
'       (3, 2, 5, 7, 11, 13, 17, 19)
'       (23, 29, 31, 37, 41, 43, 47, 55)

備註

這個成員是明確介面成員實作, 只有在 Tuple<T1,T2,T3,T4,T5,T6,T7,TRest> 執行個體轉換成 IComparable 介面時,才能使用這個成員。

這個方法提供 IComparable.CompareTo 類別的實作 Tuple<T1,T2,T3,T4,T5,T6,T7,TRest> 。 雖然可以直接呼叫 方法,但最常由集合排序方法的預設多載呼叫,例如 Array.Sort(Array)SortedList.Add ,以排序集合的成員。

警告

方法 IComparable.CompareTo 適用于排序作業。 當比較的主要用途是判斷兩個物件是否相等時,就不應該使用它。 若要判斷兩個物件是否相等,請呼叫 Tuple<T1,T2,T3,T4,T5,T6,T7,TRest>.Equals(Object) 方法。

這個方法會使用預設物件比較子來比較每個元件。

適用於