Smart-Contracts
4 posts
Rust Smart Contracts #6: Storage Patterns in ink! You Can Actually Maintain
Stop dumping everything into one big storage struct. Learn the core storage patterns in ink!—single values, mappings, many-to-many relations, and lazy configs—so your contracts stay readable, cheap to run, and easy to extend.
ink! Smart Contract Access Control: from only_owner to Role Permissions #5
Use a kitchen‑door analogy to explain env().caller(), only_owner checks, Result‑based errors, and role mappings in ink!, with minimal runnable examples so beginners can copy, run, and ship safer contracts.
Test ink! Contracts the Practical Way: Unit tests and a tiny e2e for beginners #4
Minimal runnable examples to test Rust + ink!: from #[ink::test] off-chain unit tests to a small e2e. Includes setup, full code, typical pitfalls, and fixes.
Stop Panicking on Failure: Production‑Ready ink! Events & Error Handling
Beginner‑friendly, production‑oriented ink! walkthrough: emit events for observability, return typed errors instead of panics, and ship with a minimal runnable example plus test assertions.