Macro b_tree_map

macro_rules! b_tree_map {
    (with $map:expr; insert { $($key:expr => $val:expr),* , }) => { ... };
    (with $map:expr; insert { $($key:expr => $val:expr),* }) => { ... };
    ($($key:expr => $val:expr),* ,) => { ... };
    ($($key:expr => $val:expr),*) => { ... };
}

Macro to crate a BTreeMap with a number of key-value pairs in it.

Examples

use common_macros::b_tree_map;

let is_fun_map = b_tree_map!{
    "joke" => true,
    "cat" => true,
};

Like HashMap and alternative insertion syntax exists:

use common_macros::b_tree_map;

let is_fun_map = b_tree_map!{
    "joke" => true
};

let mut less_fun_map = b_tree_map!{
    with is_fun_map; insert {
        "explosion" => false,
        "psychos" => false
    }
};

b_tree_map!{
    with &mut less_fun_map; insert {
        "cat" => true,
        "mosquito" => false
    }
};