Unsafe swap : Pointer « unsafe « C# / CSharp Tutorial

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C# / CSharp Tutorial » unsafe » Pointer   31. 3. 13. Unsafe swap using System; using System.Globalization; public class MainClass{   unsafe public static void UnsafeSwap(int* i, int* j)   {     int temp = *i;     *i = *j;     *j = temp;   }   static void Main(string[] args)   {     int i = 10, j = 20;          Console.WriteLine("Unsafe swap");     Console.WriteLine("Values before unsafe swap: i = {0}, j = {1}", i, j);     unsafe{ UnsafeSwap(&i, &j);}      Console.WriteLine("Values after unsafe swap: i = {0}, j = {1}", i, j);   } } Unsafe swap Values before unsafe swap: i = 10, j = 20 Values after unsafe swap: i = 20, j = 10 31. 3. Pointer 31. 3. 1.  Declaring a Pointer 31. 3. 2.  IntPtrs and unsafe bit-twiddling 31. 3. 3.  The & is a unary operator that returns the memory address of its operand 31. 3. 4.  Use fixed to put address of value into a pointer 31. 3. 5.  Demonstrate the effects of pointer arithmethic 31. 3. 6.  An array name with an index yields a pointer to the start of the array 31. 3. 7.  Index pointer 31. 3. 8.  Pointer arithmetic 31. 3. 9.  Get a pointer to the start of a string and display the contents of string via pointer 31. 3. 10.  Pointer of a pointer 31. 3. 11.  Assign value of myInt using pointer 31. 3. 12.  Safe Swap 31. 3. 13.  Unsafe swap

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