How do you return 'not uint' in C#?

Question

I have some code written in VB that reads as follows:

Return (Not (crc32Result))

I am trying to convert it to C#, and this is what I have:

Answer 1

Try this:

return crc32Result == 0;

Or to be a little clearer on what I'm doing:

return !(crc32Result != 0);

What the second example does is convert it to boolean by the principal of "0 is false, non-zero is true". So if it's not equal to zero, it will return true. And then I use the '!' operator to do the "not" operation. The Visual Basic code you gave apparently does the first part implicitly (as will C/C++), but C# and Java won't.

But this is if and ONLY if you're looking for a boolean return type from the function. If you're doing a bit-wise inversion, then you need the following:

return (~crc32Result);

In that case, the '~' operator does the conversion to the other bit pattern.