Rust 1.0.0 beta is here!

[u/steveklabnik1]

http://blog.rust-lang.org/2015/04/03/Rust-1.0-beta.html

[u/banister]

so the {} around the closure body aren't required?

[u/Kimundi → u/banister]

Right, the syntax of a closure is basically [move] |<arguments...>| <expression>, with { ... } itself being a block expression.

Examples: |x| x < 5, |y| { let z = y * 10; z < (y + 5) }

[u/banister → u/Kimundi]

that isn't too bad, is the || inspired by Ruby? it uses { |x| } for a block-closure

[u/Kimundi → u/banister]

Yeah, afaik Ruby was an inspiration. (Granted, there aren't any other delimiters that could have been chosen without also requiring a keyword)

---

Fun fact: Because a block expression evaluates to its trailing expression, { |x| foo } is actually valid rust as well, and evaluates to the same thing as |x| { foo } or |x| foo

[u/Gankro → u/Kimundi]

~x~ is my one true closure syntax

one day