So let's say I'm trying to create a really simple ORM. I have a
struct:
struct foo {
int a;
float b;
}
I can iterate over the struct elements with the traits
FieldTypeTuple!foo, I can iterate over the the string that
represents the elements I want to shove in the struct, but when I
try to loop over *both* of these at the same time with zip(...) I
get an error. Code:
void main() {
string test = "1,2.0";
foreach (t, value; zip(FieldTypeTuple!foo, test.split(","))) {
writeln(to!t(value));
}
}
Error:
src\orm.d(13): Error: template std.range.zip does not match any
function template declaration
C:\D\dmd2\windows\bin\..\..\src\phobos\std\range.d(3808): Error:
template std.range.zip cannot deduce template function from
argument types !()((int, float),string[])
I get what the error message is saying, but I have no idea how to
fix the code to do what I want. I tried to look up what the
FieldTypeTuple actually returns but it's calling a method on the
generic type T called tupleOf(), which I can't seem to find (in
that file or as a general function on object). I'm not sure if
it's actually a range? I assumed it would be a range of some
kind, and each of the elements would have a supertype of
something like 'type' since that's what they are. It could infer
that now you have two ranges, one of 'type' and one of 'string'.
If I'm able to foreach over two things, shouldn't I be able to
foreach over the paired ranges with zip? It seems so simple...
