Learn INK with Real Code Examples

Simple key-value store

ERC-20-like token

NFT minting and transfer

Voting and governance module

Cross-contract calls for DeFi pools

Check Rust compiler errors

Ensure ink! macros used correctly

Verify storage types

Validate event definitions

Test cross-contract calls

Write Rust unit tests in tests/ folder

Use cargo-contract test

Validate storage updates

Check event emissions

Test cross-contract interactions

Local Substrate node

Polkadot testnet

Kusama parachain

Polkadot.js deploy

CI/CD pipelines with cargo-contract

cargo-contract CLI

Substrate node template

Polkadot.js front-end

Ink! unit testing in Rust

ink! playground (online)

Polkadot and Kusama chains

Substrate-based parachains

Frontends via Polkadot.js

Off-chain workers

Cross-contract modules within Substrate

Leverage ink! macros

Write modular contracts

Unit-test extensively

Keep Wasm code minimal

Use cargo-contract CLI efficiently

Rust complexity for beginners

Wasm contract size limits

Cross-contract interaction nuances

Limited pre-built libraries

Debugging Wasm can be tricky