The hash code of an object in C# is a unique numeric value. Objects that have the same value have the same hash code.
We get the hash code by the GetHashCode() method for double objects.
public override int GetHashCode ();
It takes no parameters. It is only called on a double instance.
A 32-bit signed integer value is returned.
// use Systemusing System;// create classclass DoubleHashCode{// main methodstatic void Main(){// create double valuesdouble d1 = 12.4545;double d2 = 23/74;double d3 = 89.323234;// get and print hash codesConsole.WriteLine(d1.GetHashCode());Console.WriteLine(d2.GetHashCode());Console.WriteLine(d3.GetHashCode());}}
Lines 10–12: We create and initialize some double variables.
Lines 15–17: We call the GetHashCode() method on the variables and print the results.
// use Systemusing System;// create classclass DoubleHashCode{// main methodstatic void Main(){// create double valuesdouble d1 = 12.485;double d2 = d1 * 1;// get and print hash codesConsole.WriteLine(d1.GetHashCode());Console.WriteLine(d2.GetHashCode());}}
Line 10–11 : We create two variables with same double values.
Line 14–15: The hash codes of the two double values are returned and printed to the console.
Note: As seen when the code is run, both variables return the same hash code. This is because they are equal.