Declaring a variable as a const reference

[Paul]

Is there ever a time when it is good practice to write


int main()
{

const someType& = // ....
}

or int main()
{

const int& x = 7;
}

I know through testing that the latter example compiles but I've never
seen this used.

Thanks,

Paul

[Bo Persson]

The first example might be useful if the someType object exist elsewhere
and you don't want to copy it.

Avoiding a copy for the value 7 though, seems less than useful.



Bo Persson