Contract
The keyword ‘contract’ as indicated by its name is used to define a smart contract.
- A smart contract is a self-executing code that consists of the data members to store data, and functions that can be used to interact with it from the outside world of blockchain.
- It is similar to declaring a class in any other high-level programming language.
- There are two ways to create a contract: From solidity, and from JavaScript Api web3.js.
Example:
The below code creates a contract named ‘GeekContract’, that has a single storage variable named : “sayHello()”
// SPDX-License-Identifier: GPL-3.0
pragma solidity ^8.25.0;
contract GeekContract {
string public message = "Hello Geek";
}
Output:
Unlock the Power of Solidity: Exploring the Essential Keywords for Smart Contract Development
Solidity is a smart contract programming language built solely to develop smart contracts that can be deployed on blockchains. C++ and JavaScript inspired it, an Object Oriented and High-Level language (HLL), that helps developers define the behaviour and rules for a Decentralized Application (Dapp). Smart contract facilitates autonomous, secure, and efficient transaction execution on the blockchain without needing any intermediary (self-executable) and solidity provides the base framework for achieving the same.
It is essential to understand the common keywords used in solidity to solidify your core understanding of the language so in this article, we’ll pin down some prominent keywords that help us develop these smart contracts by embracing the true power of solidity language.
Table of Content
- Contract
- Constructor
- Data Types
- Delete
- Enum
- Function
- Interface
- Import
- Struct
- Visiblity Specifiers
- Exception Handling
- Pragma Directive
- License Defintion
- Modifier
- Data Location
- Global Variables
- Fallback Function
- SelfDestruct
- ‘assembly’ and ‘inline assembly’