On Wednesday, 9 March 2016 at 10:28:06 UTC, John Colvin wrote:
Potential for leaking references from alias this aside, is
there some reason that I shouldn't do this for all my C++-like
RAII needs:
class A
{
~this(){ import std.stdio; writeln("hello"); }
}
auto RAII(T)()
if (is(T == class))
{
struct Inner
{
private ubyte[__traits(classInstanceSize, T)] buff;
T c;
alias c this;
~this()
{
destroy(c);
}
}
Inner tmp;
import std.conv : emplace;
tmp.c = tmp.buff.emplace!T;
return tmp;
}
void main()
{
auto a = RAII!A;
}
That's almost literally what std.typecons.scoped does.