Macro stdcli::btreemap
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macro_rules! btreemap { ( $ ( $ key : expr => $ value : expr , ) + ) => { ... }; ( $ ( $ key : expr => $ value : expr ) , * ) => { ... }; }
Create a BTreeMap from a list of key-value pairs
Example
#[macro_use] extern crate maplit; let map = btreemap!{ "a" => 1, "b" => 2, }; assert_eq!(map["a"], 1); assert_eq!(map["b"], 2); assert_eq!(map.get("c"), None);