Throw compiler error based on const value

[Jef Patat]

I had thought of a solution like this as well, but this is an execution time exception. C++ allows you to have a compile time exception.

A simplified example of my situation: several arrays that are all equal in lenght and at certain point in the code you need to show the values in several labels.

 
const int length = 3;
int[] array1 = int[length];
int[] array2 = int[length];
int[] array3 = int[length];
 
for(int i=0; i < length; i++)
{
...
}
 
label1.Text = array1[0].ToString();
label2.Text = array1[1].ToString();
label3.Text = array1[2].ToString();

changing length to 2 would cause an error at runtime for label3. C++ allows you to prevent this with a compiler error.

regards,
Jef