macro_rules! map_impl {
(
$(#[$attr:meta])*
$ty:ident <K $(: $kbound1:ident $(+ $kbound2:ident)*)*, V $(, $typaram:ident : $bound:ident)*>
) => { ... };
}
macro_rules! map_impl {
(
$(#[$attr:meta])*
$ty:ident <K $(: $kbound1:ident $(+ $kbound2:ident)*)*, V $(, $typaram:ident : $bound:ident)*>
) => { ... };
}