So at some future point it would be possible to replace TypedArena_instance().alloc(X) with box(TypedArena_instance) X avoiding an extra move of X from a temporary allocated on the stack that the compiler in general cannot optimize?
On 3 July 2014 04:39, Corey Richardson <[email protected]> wrote: > The full syntax is: "box" ["(" EXPR ")"] EXPR > > The first expression is the "boxer", or where the result of the second > expression will be stored. GC and HEAP are special cased right now as > the only boxers, but the goal is to use a trait such that you can use > Rc, arenas, vectors, or any other arbitrary type as a boxer. > > On Wed, Jul 2, 2014 at 7:29 PM, Oscar Boykin <[email protected]> wrote: >> Once in the tutorial, I see this syntax: >> >> >> let x = box(GC) [1i, 2, 3, 4, 5, 6, 7, 8, 9, 10]; >> >> It seems to me, that should be: box<Gc>, as it feels like box is referring >> to a container type (which the default type is Box<_>, but may be Rc<_> or >> Gc<_>). >> >> What is the principle behind the current notation? What is "GC" is this >> context other than a special string that is a one-off syntax? >> -- >> Oscar Boykin :: @posco :: http://twitter.com/posco >> >> _______________________________________________ >> Rust-dev mailing list >> [email protected] >> https://mail.mozilla.org/listinfo/rust-dev >> > > > > -- > http://octayn.net/ > _______________________________________________ > Rust-dev mailing list > [email protected] > https://mail.mozilla.org/listinfo/rust-dev _______________________________________________ Rust-dev mailing list [email protected] https://mail.mozilla.org/listinfo/rust-dev
