pub trait ListOpt<T: Clone> {
type OptType: From<Option<T>>;
// Required method
fn as_inner(&self) -> Option<Vec<T>>;
// Provided methods
fn get(&self, index: usize) -> Self::OptType { ... }
fn map<U, F, V>(&self, f: F) -> Option<Vec<U>>
where F: Fn(T) -> V,
V: Opt<U> { ... }
fn map_values<U, F>(&self, f: F) -> Option<Vec<U>>
where F: Fn(T) -> Option<U> { ... }
}Expand description
conversion support trait for syn object list
Required Associated Types§
Required Methods§
Provided Methods§
Dyn Compatibility§
This trait is not dyn compatible.
In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.