Foundry is a blazing fast, portable and modular toolkit for Ethereum application development written in Rust.

Foundry consists of:

• Forge: Ethereum testing framework (like Truffle, Hardhat and DappTools).
• Cast: Swiss army knife for interacting with EVM smart contracts, sending transactions and getting chain data.
• Anvil: Local Ethereum node, akin to Ganache, Hardhat Network.
• Chisel: Fast, utilitarian, and verbose solidity REPL.

My notes taken during this course can be found in the Notes.md file of this repository.

$ source .env

https://book.getfoundry.sh/

$ forge build

$ forge test

$ forge fmt

$ forge snapshot

$ anvil

$ forge script script/Counter.s.sol:CounterScript --rpc-url <your_rpc_url> --private-key <your_private_key>

$ cast <subcommand>

• Will return hexadecimal value
• Allows to check that we are doing what we expect to be doing- e.g check hex data in metamask against the hex value of function name to verify correct function is being called

$ cast sig "functionName()"

• This is used to achieve the same goal of 'cast sig', however, this is used for functions that have parameters which makes the hex string much larger
• This would return what each of the parameters are for the function

$ cast --calldata-decode "functionName()" HexString(e.g.2a4d5b etc etc)

$ forge --help
$ anvil --help
$ cast --help

This project uses Foundry. See the book for instructions on how to install and use Foundry.