Solidity Libraries: A simple example of “add ()function
In this article, we explore the use of strength libraries to expand the functionality of smart contracts. In this example, we create a simple agreement called "Somecon", which uses a library called "Somelib". In particular, we use theadd ()function provided bysomelib.
What is the intelligent agreement?
Before diving into the code, it is quickly defined, which is an intelligent agreement. An intelligent agreement is a self -research program that automates the process of conducting the instructions once it has been introduced in a block chain network.
What is a solid library?
The solid library is an external module that provides a pre -written function used in an intelligent contract. These libraries may contain functions, variables and even entire modules that are reusable in several contracts.
usingadd ()function from somelib
In our example we use the following code:
`Solidity
Pragman solidity ^0.8.0;
Agreement on Somecon {
using Somelibia for Uint256;
Uint256 A = 2;
UINT256 B = 3;
Function Addnum () Public View Returns (UINT256) {
Return A.Add (B); // This line calls the “ADD () ‘function of’ somelib ‘
}
}
`
This is how it works:
somelib 'library using the' praga -to -one ^0.8.0;Directive that defines the solidity version we use.Block defines a new contract called "Somecon".A.add (b) 'function by using a specific syntax (ie' function addnum () ...).5.
The benefits of using libraries
Libraries such as libraries have many benefits:
* Re -usability : You can reuse functions and variables between multiple contracts by reducing the overlap of the code.
* Readability : Disintegrating a complex logic into smaller, manageable pieces, it is easier to understand and maintain the contract.
* Speed : Library pre -embroidered functions can be faster than implementing them from scratch.
conclusion
In this article, we have shown how to use a solid library (somelib) to expand the functionality of our” Somecon “agreement. By utilizing the pre -written code, you can simplify your development process and focus on creating innovative intelligent contracts that automate complex tasks. Remember to always follow the best practices for clean, maintainable and safe code!
