Solidity primer
What is solidity?
Solidity is a contract-oriented, high-level language for implementing smart contracts. It was influenced by C++, Python and JavaScript and is designed to target the Ethereum Virtual Machine (EVM). Solidity is statically typed, supports inheritance, libraries and complex user-defined types among other features.
Source: https://solidity.readthedocs.io/en/v0.4.25/
Best IDE
Remix: http://remix.ethereum.org
Smart contracts basics
pragma solidity ^0.4.0; //Version of solidity
contract SimpleStorage {
uint storedData;
function set(uint x) public {
storedData = x;
}
function get() public view returns (uint) {
return storedData;
}
}
Explanation:
pragma solidity ^0.4.0
Version of solidity
contract SimpleStorage
Contract is a collection of code, functions and data. Contract resides on a specific address on Ethereum blockchain
uint storedData
Unsigned Integer that represents some data.
function set(uint x) public {
storedData = x;
}
function get() public view returns (uint) {
return storedData;
}
}
Getters and setters. What's interesting the visibility of the function is declared after the list of arguments. The keyword view indicates that method get() won't modify the state of the contract.