Attribute Macro solders_macros::pyhash

#[pyhash]

Add a __hash__ to the impl using the PyHash trait.

Example

use solders_macros::pyhash;

#[derive(Debug)]
struct Foo(u8);

#[pyhash]
impl Foo {
  pub fn pyhash(&self) -> u64 {  // Fake implementation in place of `PyHash`.
     self.0.into()
  }
}

let foo = Foo(3);
assert_eq!(3, foo.__hash__());