Getting Started with Blockchain Solidity and Smart Contracts

Explore how to write and deploy smart contracts on the Ethereum network and run them on the EVM using Solidity, interacting via Web3 libraries, with gas fees and networks.

Set up the Remix editor to compile Solidity code and choose a compiler version using pragma. Explore data types such as unsigned integers, signed integers, booleans, and constants inside contracts.

Learn to declare and initialize string arrays in Solidity, compile and deploy a smart contract on an Ethereum test network, and query values publicly by index.

Define a custom data type in solidity using a struct for a product and a public initialize function to set its fields, noting no floating point values.

Learn address and mapping types in Solidity, create a mapping from address to balance with a public getter, and test deployments to avoid gas costs and buggy contracts.

Learn how to implement a Solidity constructor that sets the contract owner from msg.sender, expose a public change owner function, and enforce access control with require validation and reverts.

Learn how to send ether to a smart contract via a payable constructor. Check the contract balance with a view function, and understand gas fees and immutability.

Compare pure and view functions in Solidity, showing how pure functions do not modify or view state, while view functions read data and affect transaction costs.

Explore events and modifiers in Solidity, learn how to emit events, validate msg.value with modifiers, and distinguish msg.value from msg.sender while deploying and testing contracts.

Identify how to pass arguments to a Solidity modifier and use them in checks, demonstrated through payable transactions, balance checks, and event logs that capture the executor address.

Explore the difference between memory and storage variables in blockchain contracts, showing how memory variables are temporary and cheaper, while storage variables persist as state and incur higher costs.

Explore storage versus memory variables in a solidity smart contract with an example, showing how storage as a state variable affects the network and gas costs, while memory stays cheap.