static foreach
James Japherson
JJ at goolooking.com
Wed Oct 10 23:03:38 UTC 2018
I have a static opApply in a class and I need to iterate over all
the members statically using foreach
// Iterates over all members
static int opApply(int delegate(cPiece) dg)
{
alias T = typeof(this);
foreach (m; __traits(derivedMembers, T))
{
import std.traits : hasStaticMember;
static if (hasStaticMember!(T, m))
{
mixin("dg(X."~m~");");
}
}
return 0;
}
This is not a problem using foreach.
But when I use static foreach it fails!!!
Says that it cannot interpret X(the class that contains the
static opApply).
the opApply is static, it does everything at compile time, so why
can't the foreach be statically used?
The whole point of using opApply was so that I wouldn't have to
write all that code each time and I could just iterate over class
members when I need to.
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