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Smart contracts and Solidity · Beginner · 12 h

Solidity and the EVM

Contracts, state, functions, events, custom errors and access control, tested with Foundry unit and fuzz tests, then deployed to a local chain and called with cast.

Why employers care: Blockchain teams expect you to write clear, tested contracts and to use the standard tooling from day one.

In the roadmaps for: Blockchain Developer

Lessons, in order

  1. A tested Solidity contract with FoundryWrite a tip jar with events, custom errors and access control, and prove it with unit tests and a fuzz test that runs 256 random cases.4 min
  2. Deploy to a local chain and talk to it with castRun a local Ethereum node with Anvil, deploy the tip jar, send a transaction, read state, and watch an unauthorised call revert.3 min

Next shelf: Contract security