I stumbled upon an example demonstrating defer in Go which I
thought was interesting. Defer is similar to scope in D except
they're called at end of function rather than end of scope; you
can queue multiple defer calls by writing them inside of a loop.
This implies that it internally builds a stack of delegates which
are then executed LIFO once the function returns (or panics).
https://tour.golang.org/flowcontrol/13
I took a quick look through Phobos but didn't see anything
similar so I wrote this as a proof of concept and to elicit
discussion. This also works should the function throw rather than
return gracefully.
http://dpaste.dzfl.pl/23c665bdae9e
I think a library solution is elegant enough that it doesn't need
to be built into the language but that doesn't mean it needs to
be in Phobos either. Does anybody have a use case for "defer"
that isn't already adequately covered by scope statements?
