rust just got 4x more productive [shill thread]

Rust designers developed an idiom for concisely propagating errors outwards with a macro called try!:
let file = try!(File::open("file.txt"));
More recently, Rust shipped an even more concise notation for error propagation, the postfix ? operator:
let file = File::open("file.txt")?;

>>16

Apart from null, it might very well be the biggest design mistake of the language.

And when I point out that null pointers are the billion dollar mistake that ruined C#, someone on here had the stupidity to disagree with me!