Andrei Alexandrescu:
But the bottom line is I don't think we need to force anything
on anybody. If anything, we could split up the internal format
implementation and provide format and safeFormat functions.
format("%s %s", 1); // no exceptions
NO! This is exactly the kind of code that is buggy and useless.
The right use cases involve more arguments than format
specifiers.
Currently this code is accepted (and it prints "A B10"), but I
think it should be not accepted (also why is it 1-based?):
import std.stdio;
void main() {
writefln("A%2$s B%1$s", 10);
}
The only point I'd negotiate would be to not throw with
positional
arguments, and throw with sequential arguments. All code that
cares uses
positional specifiers anyway.
I have opened this ER:
http://d.puremagic.com/issues/show_bug.cgi?id=10489
Bye,
bearophile
