Solidity Programming Tutorials, Guides & Best Practices

1. Uniswap

• Optimization: Uniswap V2 introduced several optimizations, including reducing the number of state changes in core functions and using assembly code for certain operations.
• Impact: These optimizations led to significant gas savings, making Uniswap more cost-effective for users.

Example Contract:

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

contract MessageStore {
    string public message;

    function setMessage(string memory newMessage) public {
        message = newMessage;
    }

    function getMessage() public view returns (string memory) {
        return message;
    }
}

Solidity is the programming language used to write smart contracts on Ethereum. Let’s create a simple smart contract that stores a number and allows users to update it.

Example Contract: