What's the false operator in C# good for?
- by Jakub Šturc
There are two weird operators in C#:
the true operator
the false operator
If I understand this right these operators can be used in types which I want to use instead of a boolean expression and where I don't want to provide an implicit conversion to bool.
Let's say I have a following class:
public class MyType
{
public readonly int Value;
public MyType(int value)
{
Value = value;
}
public static bool operator true (MyType mt)
{
return mt.Value > 0;
}
public static bool operator false (MyType mt)
{
return mt.Value < 0;
}
}
So I can write the following code:
MyType mTrue = new MyType(100);
MyType mFalse = new MyType(-100);
MyType mDontKnow = new MyType(0);
if (mTrue)
{
// Do something.
}
while (mFalse)
{
// Do something else.
}
do
{
// Another code comes here.
} while (mDontKnow)
However for all the examples above only the true operator is executed. So what's the false operator in C# good for?
Note: More examples can be found here, here and here.
