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Substrate · medium

3. Substrate & FRAME Pallets

Modular blockchain development framework.

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Substrate is the Rust modular framework powering Polkadot chains. FRAME (Framework for Runtime Aggregation of Modularized Entities) allows composable runtime creation using modular Pallets (e.g. `pallet_balances`, `pallet_contracts`, `pallet_xcm`).

rust
#[frame_support::pallet]
pub mod pallet {
    use frame_support::pallet_prelude::*;
    use frame_system::pallet_prelude::*;

    #[pallet::pallet]
    pub struct Pallet<T>(_);

    #[pallet::config]
    pub trait Config: frame_system::Config {
        type RuntimeEvent: From<Event<Self>> + IsType<<Self as frame_system::Config>::RuntimeEvent>;
    }
}

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Check your understanding

1. What is FRAME in Substrate development?
A modular framework for composing Substrate blockchain runtimes using PalletsA frontend UI templateA database engineA network router
2. What macro declares a Substrate pallet module?
#[frame_support::pallet]#[program]#[starknet::contract]#[pallet_app]

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