File: string-self-append.rs

package info (click to toggle)
rustc 1.86.0%2Bdfsg1-1
  • links: PTS, VCS
  • area: main
  • in suites: experimental, forky, sid
  • size: 913,560 kB
  • sloc: xml: 158,127; python: 35,921; javascript: 19,689; sh: 19,600; cpp: 18,906; ansic: 13,124; asm: 4,376; makefile: 708; perl: 29; lisp: 29; ruby: 19; sql: 11
file content (14 lines) | stat: -rw-r--r-- 359 bytes parent folder | download | duplicates (16) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
 
//@ run-pass
pub fn main() {
    // Make sure we properly handle repeated self-appends.
    let mut a: String = "A".to_string();
    let mut i = 20;
    let mut expected_len = 1;
    while i > 0 {
        println!("{}", a.len());
        assert_eq!(a.len(), expected_len);
        a = format!("{}{}", a, a);
        i -= 1;
        expected_len *= 2;
    }
}