src/test/ui/str-concat.rs


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// run-pass

pub fn main() {
    let a: String = "hello".to_string();
    let b: String = "world".to_string();
    let s: String = format!("{}{}", a, b);
    println!("{}", s.clone());
    assert_eq!(s.as_bytes()[9], 'd' as u8);
}