Macro fixed_hash::impl_fixed_hash_conversions

macro_rules! impl_fixed_hash_conversions {
    ($large_ty:ident, $small_ty:ident) => { ... };
}

Implements lossy conversions between the given types.

Note

• Both types must be of different sizes.
• Type large_ty must have a larger memory footprint compared to small_ty.

Panics

Both From implementations will panic if sizes of the given types do not meet the requirements stated above.

Example

#[macro_use] extern crate fixed_hash;
construct_fixed_hash!{ struct H160(20); }
construct_fixed_hash!{ struct H256(32); }
impl_fixed_hash_conversions!(H256, H160);
// now use it!
assert_eq!(H256::from(H160::zero()), H256::zero());
assert_eq!(H160::from(H256::zero()), H160::zero());