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yasukotelin/hashmap!.rs

Created August 6, 2020 14:31
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hashmap!.rs
macro_rules! hashmap {
($( $key: expr => $val: expr ),*) => {{
let mut map = ::std::collections::HashMap::new();
$( map.insert($key, $val); )*
map
}}
}
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Link: https://www.366service.com/jp/qa/3b42bd30380c728939a2e80b42d430a6

@yasukotelin
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Usage

use std::collections::HashMap;

let hash: HashMap<&str, i32> = hashmap!["hello" => 1, "world" => 2];

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