candid

Macro func

source 
macro_rules! func {
    ( ( $($arg:ty),* $(,)? ) -> ( $($ret:ty),* $(,)? ) ) => { ... };
    ( ( $($arg:ty),* $(,)? ) -> ( $($ret:ty),* $(,)? ) query ) => { ... };
    ( ( $($arg:ty),* $(,)? ) -> ( $($ret:ty),* $(,)? ) composite_query ) => { ... };
    ( ( $($arg:ty),* $(,)? ) -> ( $($ret:ty),* $(,)? ) oneway ) => { ... };
}
Expand description

Construct a function type.

func!((u8, &str) -> (Nat) query) expands to Type(Rc::new(TypeInner::Func(...)))