I was chatting with a friend and showed him how printf("%s")
printed random memory in C, whereas writefln("%s") in D threw an
Exception upon execution. It's probably not a completely fair
comparison but that's a different topic.
I admit to being confused as to why it passed compilation at all
in the first place. Surely the "%s" literal is just as known at
compilation as an enum would be.
Is there any button in D that could be leveraged to statically
assert that the number of arguments precisely match the number of
format specifiers, iff the pattern is static/enum/literal?
I asked in #d and had it pointed out that this could be solved
via an overload of writefln that took the pattern as a template
instantiation argument, to which I conceed. The main con would
naturally be that you end up with template bloat. You could also
have tooling (dfix/dscanner) handle it for you.
But the compiler has all the pieces of information needed to see
it's wrong, doesn't it?
How much of this kind of thing is evaluated during the CTFE
passes?
- writefln patterns with mismatching com... JR via Digitalmars-d-learn
-