Macro impl_more::impl_as_ref
source · macro_rules! impl_as_ref { ($this:ident $(<$($generic:ident),+>)? => $inner:ty) => { ... }; ($this:ident $(<$($generic:ident),+>)? => $field:ident : $inner:ty) => { ... }; }
Expand description
Implement AsRef
for a struct.
The first argument is that of the struct to create the impl for and the second is the type to produce a reference for.
§Examples
With a newtype struct:
use impl_more::impl_as_ref;
struct Foo(String);
impl_as_ref!(Foo => String);
let foo = Foo("bar".to_owned());
assert_eq!(foo.as_ref(), "bar");
With a named field struct and type parameters:
use impl_more::impl_as_ref;
struct Foo<T> { inner: T }
impl_as_ref!(Foo<T> => inner: T);
let foo = Foo { inner: "bar".to_owned() };
assert_eq!(foo.as_ref().as_str(), "bar");