/solidity_learning

Primary LanguageJavaScript

Solidity Notes + Code

get started

  • install npm + node.js npm install -g npm
  • npm install -g truffle
  • npm install ganache-cli@latest --global

go to your project folder and run: truffle init

you'll find various directories:

  • contracts: where your .sol files are located - the contracts directory
  • migrations: deploy your contracts
  • test: to test the system

truffle-config.js: specity all versions and blockchain configuration

run and connect to the blockchain

Open ganache and start it: it creates a fake blockchain on your machine. Copy host:port from ganache and pase it into truffle-config.js

    development: {
    host: "127.0.0.1",     // Localhost (default: none)
    port: 7545,            // Standard Ethereum port (default: none)
    network_id: "*",       // Any network (default: none)
    },

create + deploy + test a contract

  • create a new contract file .sol as: contracts/MyContract.sol
  • create a new migration file as: migrations/2_deploy_contracts.js
  • run truffle migrate

interact with the smart contract via truffle

truffle console
MyFirstContract.deployed().then(function(i) {contract=i;})
contract.address // call contract functions