Should I use `!IsGood` or `IsGood == false`?

Question

I keep seeing code that does checks like this

if (IsGood == false)
{
   DoSomething();
}

or this

if (IsGood == true)
{
   D         


        

Answer 1

The only time I can think where the more vebose code made sense was in pre-.NET Visual Basic where true and false were actually integers (true=-1, false=0) and boolean expressions were considered false if they evaluated to zero and true for any other nonzero values. So, in the case of old VB, the two methods listed were not actually equivalent and if you only wanted something to be true if it evaluated to -1, you had to explicitly compare to 'true'. So, an expression that evaluates to "+1" would be true if evaluated as integer (because it is not zero) but it would not be equivalent to 'true'. I don't know why VB was designed that way, but I see a lot of boolean expressions comparing variables to true and false in old VB code.