On Tuesday, 7 July 2015 at 23:40:55 UTC, Tofu Ninja wrote:
On Tuesday, 7 July 2015 at 20:08:10 UTC, Daniel N wrote:
Error: this is not in a class or struct scope
mixin template NodeT1(T = typeof(this))
{
}
mixin template NodeT2()
{
alias T = typeof(this);
}
struct Node
{
mixin NodeT1; // fail
mixin NodeT2; // pass
}
Pretty sure that is expected. Default params are evaluated in
the declaration scope, so typeof(this) is not defined in
NodeT1. The only things that break this rule are the special
identifiers like __FILE__ which are evaluated at the
instantiation/call site.
From http://dlang.org/template-mixin.html:
Unlike a template instantiation, a template mixin's **body** is
evaluated within the scope where the mixin appears, not where the
template declaration is defined.
So it looks like your code is working as intended.
