On Monday, 30 June 2014 at 17:47:11 UTC, Brian Rogoff wrote:
On Monday, 30 June 2014 at 17:28:06 UTC, Ary Borenszweig wrote:
On 6/30/14, 1:50 PM, Nick Treleaven wrote:
Hi,
This recent proposal looks like it might clean up typical
Rust function
What are those 'a all over the place? I never understood them
:-(
Those are lifetimes, which are a part of the Rust type
annotation machinery. The syntax is borrowed (pun intended ;-)
from ML family languages, which use type variables like 'a, 'b,
'c (pronounced "alpha", "beta", "gamma", or "tick a", tick b",
"tick c") to express parametric polymorphism.
Rather than try to explain Rust's lifetimes, I'll point you here
http://rustbyexample.com/lifetime.html
Rust is still undergoing development, and the lifetime syntax
is a bit noisy, so it may change, but the rustbyexample page
has been following the Rust nightly builds closely. It's an
interesting language, and the Mozilla backing really helps it,
but I find D and Nimrod easier to use right now.
I like this rustbyexample.com, is there a dbyexample.com?
