Using helper functions

Helper functions simplify complex blockchain operations, enhancing code readability, reusability, and maintenance. In Rust-based blockchain development, functions such as get_transactions, get_prev_block_hash, and get_hash abstract away intricacies, enabling modular design and efficient debugging while focusing on high-level logic.

Let’s add some functions to the block.rs file that can help us work with blocks:

pub fn get_transactions(&self) -> &[Transaction] {
        self.transactions.as_slice()
    }

This function helps us to get the list of transactions, but let’s break it down and see what’s happening here.

This function is defined on a Rust struct and returns a borrowed reference to a slice of Transaction objects:

• pub indicates that this function can be called from outside the struct.
• fn is the keyword that’s used to define a function...