Rollup merge of #104965 - zacklukem:p-option-as_ref-docs, r=scottmcm

[rust.git] / tests / ui / hashmap / hashmap-index-mut.rs

use std::collections::HashMap;

fn main() {
    let mut map = HashMap::<u32, u32>::new();
    map[&0] = 1; //~ ERROR cannot assign
}