macro_rules! resolve {
    ($type:ty) => { ... };
    ($type:ty, $name:expr) => { ... };
    (trait $trait_type:ident $(<$($generic:ident),+>)?) => { ... };
    (trait $trait_type:ident $(<$($generic:ident),+>)?, $name:expr) => { ... };
}
Expand description

Returns a value from the Container or None if is not in the container.