Foundry Base Usage

1. Create a .env (only for Test Account)
2. Input the private key of test account and RPC_URL

   PRIVATE_KEY=0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80
   RPC_URL=http://127.0.0.1:8545
   

3. Set the env variables by cmd source ./.env
4. Use the pre-setting variables by cmd $RPC_URL
5. Deploy the contracts and get the deployed address by cmd
   1. Deploy the contract without --broadcast will lead to dry-run

   forge script [scriptPath] --rpc-url $RPC_URL --private-key $PRIVATE_KEY --broadcast
   

6. Call the funtions of contract

   # Call the store function of contract and set the input param as 77
    cast send [contractAddress] "store(uint256)" 77 --rpc-url $RPC_URL --private-key $PRIVATE_KEY
   
   # Call the retrieve function of contract and get the output value
   # Then pass it though pipe to cast to convert it to decimal
   cast call 0x5FbDB2315678afecb367f032d93F642f64180aa3 "retrieve()" | cast --to-dec
   

7. Use the --interactive command to interact with the contract
   1. If you don’t want to use the explicit --rpc-url and --private-key command, you can use the --interactive command to interact with the contract