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rustrust-0.9

How do I reverse a string in 0.9?

How do I reverse a string in Rust 0.9?

According to rosettacode.org this worked in 0.8:

let reversed:~str = "一二三四五六七八九十".rev_iter().collect();

... but I can't get iterators working on strings in 0.9.

Also tried std::str::StrSlice::bytes_rev but I haven't figured out a clean way to convert the result back into a string without the compiler choking.

Solution

  • First of all iteration over bytes and reversing will break multibyte characters (you want iteration over chars)

    let s = ~"abc";
let s2: ~str = s.chars_rev().collect();
println!("{:?}", s2);