On Sunday, 9 February 2014 at 17:57:23 UTC, Dmitry Olshansky
wrote:
void risef(T...)(string fmt, T args)
{
static Failure!T slot;
if(!slot)
slot = new Failure!T();
slot.assign(fmt, args);
throw slot;
}
If the template is instantiated we can say with almost certainty
that the function will be called, so it'd be an improvement to
allocate the exception instance statically (lazily initialized
with emplace), instead of statically allocating just a reference
to a GC-allocated instance.
Also, it's nice to keep the throw statement in user code, e.g.
`throw allocExf(fmt, args);`, as `throw` is a no-return statement
like `return`, `assert(false)` etc.
