As far as I understand (I'm a newbie too), it means that 'radius' is the reference to the value in the box.
On Tue, May 27, 2014 at 10:27 AM, Tommi <rusty.ga...@icloud.com> wrote: > What is the meaning of this 'box ref foo' syntax found in the tutorial > over at __http://doc.rust-lang.org/tutorial.html#references > > (Sorry for uglifying the link, my posts seem to get flagged as spam if > they contain links) > > In short, it's: > > enum Shape { Sphere(Box<f32>) } > > let shape = Sphere(box 1.0f32); > let r = match shape { > Sphere(box ref radius) => *radius > }; > > I thought the 'box' keyword meant: "allocate on heap and wrap into a Box". > That doesn't make sense to me in the context of 'box ref radius'. > > _______________________________________________ > Rust-dev mailing list > Rust-dev@mozilla.org > https://mail.mozilla.org/listinfo/rust-dev >
_______________________________________________ Rust-dev mailing list Rust-dev@mozilla.org https://mail.mozilla.org/listinfo/rust-dev
