Macro fixed_hash::construct_hash

macro_rules! construct_hash {
    ($from: ident, $size: expr $(, $m:meta)*) => { ... };
}

Construct a fixed-size hash type. Takes the name of the type and the size in bytes and an optional third argument for meta data Example: construct_hash!(H256, 32); Example: construct_hash!(H160, 20, cfg_attr(feature = "serialize", derive(Serialize, Deserialize)));