I'm pretty sure that this is just a bad error message.
void main(){
writeln("ok: ", ok, " ok[0]: ", ok[0]);
// ok: Tuple!(string, string, string)("one", "two", "three")
ok[0]:
one
writeln("er: ", er, " er[0]: ", er[0]);
// er: onetwothree er[0]: one
}
What I expect is happening is that TypeTuples don't convert to
string, so the
pragma fails,
hmm, but it is a TypeTuple of strings and aren't they supposed to
automatically expand? and pragma(msg, ...) takes various
arguments, e.g.
pragma(msg, "this", "and", "that");
so is it just a bad error message or a "bug" in pragma(msg, ...)?
(..,i know, pragmas are difficult to blame for anything as they
are not part of the language proper. but in lieu of a compile
time print this is all we got for debugging our meta stuff.)
then there is the thing of assigning value type TypeTuples to
variables/enums. is this allowed or not? see my observations
regarding enums which are for 2.063.2. according to anonymous in
the git head for 2.064 the enum example for string value
TypeTuples now fails...i don't think any of this behavior is
documented anywhere. what i think is missing is a clearly defined
boundary/set of rules for what we can do with the internal
"tuples" (aka TypeTuples) and how, and what not.
/det
