Don't use negated method names!

What does this mean. Don't write something like

public bool IsNotCorrect(...)
{
   ...
}

but rather write

public bool IsCorrect(...)
{
   ...
}

and the caller of the method then does the negation by calling it like

if(!IsCorrect(...)){
  //do something
}

or

if(IsCorrect(...) == false){
  //do something
}

as you prefer.

For instance consider the "pseudo-like-code" example

bool IsNotCorrect("today is Monday")
{

}

and in the program I want to check whether today is Monday. So what I would have to write is

..
bool isMonday = !IsNotCorrect("today is Monday");

This is some kind of "double negation". The "IsNotCorrect(...)" will return "true" if today is NOT Monday, and false otherwise. Too complicated.

I mean this sounds somehow obvious to me and I guess a lot of people are doing this already without even thinking about it, but still I often see code written in this manner wherefore I guess it's worth mentioning.

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