FaucetFlow
A basic Solidity smart contract that stores, updates, and retrieves a single numeric value — designed to demonstrate state variables, setters, getters, and view functions.
ビデオ
説明
The Simple Storage smart contract is one of the most fundamental examples in Solidity development. It demonstrates how to store, update, and retrieve a single numeric value on the Ethereum blockchain. This project is ideal for beginners who want to understand how state variables, functions, and data persistence work in smart contracts.
At its core, the contract maintains a single uint256 variable called storedValue, which is permanently recorded on-chain. Users can interact with two key functions:
setValue(uint256 _value)— allows anyone to update the stored value.getValue()— returns the currently stored value without consuming gas (when called locally).
The contract also emits a ValueChanged event whenever the stored value is updated, allowing external interfaces or DApps to listen for changes.
By experimenting with this contract, developers gain a clear understanding of:
How blockchain stores and maintains state.
The difference between transactional and view functions.
Gas costs associated with writing versus reading data.
Basic contract structure, including visibility and events.
This project serves as a foundational step toward mastering more complex smart contract concepts like mappings, structs, and modifiers.