Macros for container literals with specific type.
#[macro_use] extern crate maplit;
# fn main() {
let map = hashmap!{
"a" => 1,
"b" => 2,
};
# }
The maplit crate uses =>
syntax to separate the key and value for the
mapping macros. (It was not possible to use :
as separator due to syntactic
restrictions in regular macro_rules!
macros.)
Note that rust macros are flexible in which brackets you use for the invocation.
You can use them as hashmap!{}
or hashmap![]
or hashmap!()
.
Generic container macros already exist elsewhere, so those are not provided here at the moment.