On Friday, 10 December 2021 at 13:35:37 UTC, Matheus wrote:
Hi,
Wouldn't the compiler be smart with this shadowing variable,
example:
void main(){
int j;
for(int i=0,j=0;i<10;++i){}
return;
}
onlineapp.d(3): Error: variable `j` is shadowing variable
`onlineapp.main.j`
So in the "for loop" shouldn't "i" be declared and "j" just be
assigned to 0?
Intuitively, there are two possible interpretations here for
inexperienced humans (and you seem to be favoring the latter):
1. declare a new "j" variable to be visible only inside of the
loop.
2. reuse the existing "j" variable.
But only one of them is a correct description of what actually
happens when the compiler processes this code. So it's a good
thing that the compiler is smart enough to reject ambiguous code
and prevent humans from making mistakes.
