Re-exports

pub use crate::block::Block;
pub use crate::blockchain::Blockchain;
pub use crate::hashable::Hashable;

Modules

Enums

Allow the use of “{:?}” format specifier

Functions

In the stable version rust that we used is concat macro.
🔬 For a nightly-only experimental API. (slice_concat_trait #27747) https://doc.rust-lang.org/std/slice/trait.Concat.html# Another Solution
#[macro_use(concat_string)]