In this article, learn how to smart contract development on Ethereum using Remix IDE. Also, explore the advantages of Remix IDE in simplifying the development.
Ethereum
At its core, Ethereum is a decentralized global software platform built on blockchain technology. Best known for its native cryptocurrency, Ethereum or ETH. Ethereum can be used by anyone to develop any secure digital technology you can imagine. It has tokens designed for use on the blockchain network, but can also be used by participants as a payment method for work done on the blockchain.
Ethereum is scalable, programmable, secure, and decentralized. It is the blockchain of choice for businesses and developers who are building technology on top of it to transform several sectors and how we live our daily lives. Ethereum is a technology that`s home to digital money, global payments, and applications. A thriving digital economy, innovative new ways for creators to make money online, and much more have all been established by the community. It's open to everyone, wherever you are in the world - all you need is the internet.
Suggested Read | How will Ethereum 2.0 Cut off Energy Consumption
Understanding a Smart Contract
Simply put, smart contracts are blockchain-based algorithms that execute when certain criteria are met. They are often used to automate the execution of an agreement so that all participants can be immediately sure of the outcome without middleman intervention or loss of time. They can automate processes such that when conditions are satisfied, more action is taken.
Remix IDE
The Remix IDE is an open-source web and desktop application. It facilitates a rapid development cycle and has a variety of plugins with an intuitive GUI. The remix is used in the process of contract development and acts as a playground for learning and teaching Ethereum.
Also, Discover | A Definitive Guide to Smart Contract Development Tools
Is Remix IDE Necessary for DApp Development
Before we take a closer look at some of the components of Remix, we must let you know that Remix is completely unnecessary to create a dApp. Several Remix alternatives come in the form of websites and apps for Windows, Linux, Mac, and even Ethereum. According to popular blogs, Ethereum is the most popular choice because it is free and open-source. Other options include TokenMint, Solidity, Byton, and KIN. But new options are constantly appearing.
// SPDX-License-Identifier: GPL-3.0
pragma solidity >=0.7.0 <0.9.0;
/**
* @title Biometric Attendance System
* @dev Implements Biometrics Attendance process along with vote delegation
*/
contract BiometricsAttendance {
struct Employee {
uint fingerPrint; // Employee fingerPrint id
bool detected; // if true, that employee is present
address department; // employee department
uint attendeeId; // id of employee
}
struct TotalAttendeesPerDepartment {
// If you can limit the length to a certain number of bytes,
// always use one of bytes1 to bytes32 because they are much cheaper
bytes32 departmentName; // short name (up to 32 bytes)
uint noOfAttendees; // number of attendees
}
address public admin;
mapping(address => Attendee) public attendees;
TotalAttendeesPerDepartment[] public totalAttendeesPerDepartment;
/**
* @param departmentName from departments
*/
constructor(bytes32[] memory departmentName) {
admin = msg.sender;
attendees[admin].weight = 1;
for (uint i = 0; i < totalAttendeesPerDepartment.length; i++) {
// 'Proposal({...})' creates a temporary
// Proposal object and 'proposals.push(...)'
// appends it to the end of 'proposals'.
totalAttendeesPerDepartment.push(TotalAttendeesPerDepartment({
name: departmentName[i],
noOfAttendees: 0
}));
}
}
/**
* @dev permit 'attendee' to use the biometric machine. May only be called by 'admin'.
* @param attendee address of attendee
*/
function verifyAttendee(address attendees) public {
require(
msg.sender == admin,
"Only Admin can verify the attendee."
);
require(
!attendees[attendee].detected,
"The attendee has already scanned."
);
require(attendees[attendee].detected == 0);
attendees[attendee].detected = 1;
}
function delegate(address to) public {
Voter storage sender = voters[msg.sender];
require(!sender.voted, "You already voted.");
require(to != msg.sender, "Self-delegation is disallowed.");
while (voters[to].delegate != address(0)) {
to = voters[to].delegate;
// We found a loop in the delegation, not allowed.
require(to != msg.sender, "Found loop in delegation.");
}
sender.voted = true;
sender.delegate = to;
Voter storage delegate_ = voters[to];
if (delegate_.voted) {
// If the delegate already voted,
// directly add to the number of votes
proposals[delegate_.vote].voteCount += sender.weight;
} else {
// If the delegate did not vote yet,
// add to her weight.
delegate_.weight += sender.weight;
}
}
/**
* @dev Give your vote (including votes delegated to you) to proposal 'proposals[proposal].name'.
* @param proposal index of proposal in the proposals array
*/
function vote(uint proposal) public {
Voter storage sender = voters[msg.sender];
require(sender.weight != 0, "Has no right to vote");
require(!sender.voted, "Already voted.");
sender.voted = true;
sender.vote = proposal;
// If 'proposal' is out of the range of the array,
// this will throw automatically and revert all
// changes.
proposals[proposal].voteCount += sender.weight;
}
/**
* @dev Computes the winning proposal taking all previous votes into account.
* @return winningProposal_ index of winning proposal in the proposals array
*/
function winningProposal() public view
returns (uint winningProposal_)
{
uint winningVoteCount = 0;
for (uint p = 0; p < proposals.length; p++) {
if (proposals[p].voteCount > winningVoteCount) {
winningVoteCount = proposals[p].voteCount;
winningProposal_ = p;
}
}
}
/**
* @dev Calls winningProposal() function to get the index of the winner contained in the proposals array and then
* @return winnerName_ the name of the winner
*/
function winnerName() public view
returns (bytes32 winnerName_)
{
winnerName_ = proposals[winningProposal()].name;
}
}
Check It Out | dApp Development | Your Guide to Decentralized Applications
Summary
Starting with the question "What is a remix", you probably already know very little about the subject. However, you have come a long way to this point. You can tell the answer to this question at a glance right now. You know that the Remix IDE is part of the Remix project and it is an open-source development environment that is mainly used for the entire smart contract development process. Furthermore, we also covered the basic Remix features, modules, and libraries. Also, now that you know that to learn more about this useful platform, you need to visit remix.ethereum.org. After a deep dive into "What is a Remix", you'll want to use Moralis to develop your next dApp.
On the other hand, we have also informed you that Remix is not required at all to create a dApp. If you know JavaScript and some of the essentials of blockchain technology, you have what it takes to start developing decentralized applications.
Tap into the potential of blockchain technology by availing yourself of our blockchain development services. Connect with our blockchain developers to get started.
November 23, 2024 at 01:30 am
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