The Introduction of Solidity
The main difference between Solidity and Java is that the first one is an inertly typed language; only return types are dynamic. C++ and Python also have had an impact on the language.
Solidity allows building smart contracts for applications such as voting, crowdfunding, blind auctions, multi-signature wallets, and more.
It’s important to establish contact using the latest launched version of Solidity.
The reason is that cutting variations along with innovations and bug fixes are presented systematically. If you wish to work with Ethereum and smart contracts, you definitely should learn Solidity.
Why Learn Solidity?
There are several programming languages that allow the development of smart contracts. Among them are Vyper, Golang, Java, and Solidity. Let’s see what the reasons to prefer Solidity are. It is
- Functional. Solidity is the most used language by a new developer when it comes to programming smart contracts. This mostly takes care of money-related calls (such as auctions, crowdfunding, or wallets with a multi-signature feature). Nevertheless, you can build other decentralized applications, too (say, for voting).
- Promising: the world invests billions in blockchain solutions every year. While most of it originates from financial corporations, all classes of businesses employ blockchain. So, there is a huge demand for skilled Solidity developers
- Flexible: you can use a Remix online compiler or download a command-line compiler on your PC to compose smart contracts. Both of these choices are absolutely free.
- Improving: Solidity language updates, such as new highlights and bug fixes, are offered constantly.
What Can You Do With Solidity?
Solidity is the backbone of the Ether network. No Solidity means no Ether. Here’s what you can do with this programming language:
- Dapps. The programming language allows developers to formulate their own decentralized applications. You can download all kinds of apps from the app store, from games to fitness and banking. Dapps are the same. The main difference is that they are open source and do not have mediators. Just as the apps in the Apple App Store are built to run on iOS, Dapps on Ethereum are built to operate on Solidity.
- Smart contracts. Dapps have shreds of code known as smart contracts. They help people exchange money, stocks, property, and almost anything of value, subject to individual orders. This eliminates the demand for an expensive third party such as a notary.
- ICO. Developers can also create their personal tokens and launch ICOs right on Ethereum. These symbols are known as ERC20 tokens.
Solidity provides inheritance properties in contracts, including multiple-level inheritance properties. Inheritance is described as the capability of a class to derive properties and characteristics from another class. It’s an essential point of Object-Oriented Programming.
Smart contracts present a safe, simple, and reliable medium for various sources which have the involvement of two sides to make a deal on something.
Contracts support complex member variables in hierarchical mapping and structures.
Multiple type-safe functions are also supported in Solidity through facilitating ABI (Application Binary Interface).
Solidity also has many disadvantages. Among them are constraints in changing smart contracts, unavailability of a Standard Library (Every language has its library to perform functions), and the fact that data is available only from transactions. Although the language has these limitations, it offers alternative ways to solve the problems. For instance, data insufficient problems can be addressed using Oracle systems. The team is working on language improvement.
Solidity and EVM
Ethereum is an open-source, decentralized platform for making smart contracts. It suggests a more practice way of forming and operating composite applications like ﬁnancial exchanges and insurance contracts on a shared network. The heart of Ethereum is the Ethereum Virtual Machine (EVM), which carries out the key of random algorithmic complexity. Solidity is created for developing smart contracts that operate on the EVM.
Solidity contracts are ﬁrst arranged to bytecode which is ultimately presented on the EVM.
Similar to other blockchains, Ethereum includes a peer-to-peer network protocol. The Ethereum blockchain database is maintained and updated by several nodes tied to the system. Every node on the network runs the EVM and executes the same set of instructions.
The Ethereum platform itself is featureless or value-agnostic. It is up to organizations and developers to decide what it should be used for. However, certain application types beneﬁt more than others from Ethereum’s capabilities. Speciﬁcally, Ethereum is suited for applications that automate direct interaction between peers or facilitate coordinated group action across a chain. For instance, applications for coordinating peer-to-peer marketplaces or the automation of complex ﬁnancial contracts.
Solidity Smart Contract Basics
A contract in the form of Solidity is a combination of code (its functions) and data (its position) that dwells at a particular place on the Ethereum blockchain.
Solidity is a statically typed language, which means that the type of each variable (state and local) needs to be specified. Solidity provides several elementary types which can be combined to form complex types. Besides, types can cooperate with each other in expressions containing operators.
Smart contracts are where all the business logic of our statement exists – all variables and functions associated with a contract, and this will be the beginning stage of all projects.
In any programming language, operators play an important role. They create a foundation for programming. Operators are symbols that tell the compiler to perform specific mathematical or logical manipulations. Similarly, the functionality of Solidity is also incomplete without the use of operators. Operators allow users to perform different operations on operands. Solidity supports the following types of operators based on their functionality.
- Arithmetic Operators allow for performing arithmetic or mathematical operations.
- Relational Operators are used to comparing two values.
- Logical Operators are used for combining two or more conditions.
- Bitwise Operators operators work at a bit level used to perform bit-level operations.
- Assignment operators are for the assignment of value to a variable.
- Conditional Operator. It is a ternary operator that evaluates the expression first and then checks the condition for the return value.
Remix is a Solidity IDE (Integrated Development Environment) that’s used to write, compile and debug Solidity code. The term IDE itself represents an application with a set of tools meant to help programmers to solve different tasks concerning software development.
You can access the Remix IDE in different ways: online, via a web browser like Chrome, from a locally installed copy, or from Mist (the Ethereum Dapp browser).
Steps to Become a Solidity Developer
Of course, there are some actions you need to take to start working as a Solidity developer. The most important thing is to learn about Web3.
Web 3.0 (2020+) is the age of ownership. Users have the ability not only to create and consume content but also to own their content. This ownership is exercised in the form of tokens. Web 3.0 is built on peer-to-peer networks of computers that communicate with each other, thus avoiding the need for intermediaries.
Web 3.0 runs on tokens, and there are two types of them:
- Fungible tokens: fungible, divisible (e.g., US dollar, bitcoin).
- Non-Fungible Tokens (NFTs): Unique, non-reproducible (e.g., artwork, domain name).
There are some main features of the Web 3.0 blockchain stack:
– Internet of Everything
These days, we often use the term to define a device that can connect and use the Internet – smart. We are now surrounded by these smart devices. Are you wondering how? Take a moment and look around. There are smart refrigerators; people use home assistants like Alexa and Google Assistant, smartphones, and tabs. All of these things can connect to the Internet. They form a network of devices. Together they are called the Internet of Things (IoT). The Internet of Things is one of the most distinctive features of Web 3.0. Sometimes people refer to this phenomenon as “omnipresence.”
The goal is to connect anything and everything to the Internet. Not all devices can connect now. We don’t have that kind of infrastructure right now. But soon enough, it will.
The Web 3.0 blockchain application stack is designed to be more user-centric. It aims to be the perfect P2P network where you can be freer, and knowledge is not controlled by any entity. Since there will be no centralized servers, all data will be distributed between devices, and people will access them without any control.
Semantic metadata will help users connect easily. People are creating more content now than ever before. Personal blogs are very popular. People don’t have to rely on the media and corporate content creators. Now they just follow others. Thus, a world is being created in which people will be more humane and the Internet more user-oriented.
– Artificial intelligence
Basically, AI will work to provide better analysis and results for humans. In fact, the tech giants are already working on their AI. Look around YouTube; when you’ve been listening to country rock music for a while, you’ll notice suggestions for other country rock or melodic rock songs. The AI just tries to determine your taste and suggests the best option that you might like. He analyzes your behavior.
What’s more, you’ll notice that Facebook ads change as soon as you search for a particular product on Google. Everything is interconnected. So instead of using mass marketing techniques, the future marketing strategy will be based on people.
– Semantic Web
The blockchain technology stack brings forth a topic called the semantic web. The Semantic Web simply means the method of understanding web content as human behavior. It is related to machine learning and artificial intelligence. The Semantic Web basically tries to teach the computer to understand data and how it behaves.
While Web 2.0 relies on keywords, page authority, and domain authority to rank content, the Web 3.0 browser attempts to understand web content as a human being.
– 3D graphics and future of content (3D Graphics and Future of Contents)
Undoubtedly, web content has become more graphic these days. People love watching and sharing videos and images more than regular texts. In the near future, augmented reality (AR) and virtual reality (VR) will become commonplace. Various applications and games will have more realistic graphics, and the user will become a key element in such systems.
In addition, 3D printing is not limited to laboratory use. People will use 3D printing more, and it will become more accessible and cheaper.
Web3 is the basis of the blockchain. Now when you know more about the core here are some basic steps to take for the future career of a Solidity developer:
Step 1: Assess Your Skills
The experience of universal (full) development is a huge advantage but absolutely not a prerequisite. Perhaps you only focused on the back-end and didn’t touch the web design. Your job may have been to create components with React, but the mere mention of microservices made you cringe.
The most important thing is that you know your quirks and the quirks of generic development.
Step 2: Identify the missing skills
Now that you know your strengths and weaknesses, you need to determine what else is left to finish.
Ethereum is a great entry point into blockchain development. This platform has the second-largest market capitalization among all cryptocurrency systems. And so it was almost throughout the entire time of its existence. It wasn’t until the boom in 2017 that the XPR system briefly took the lead. And yet, Ethereum is a very popular project. It has a large developer community, so many problems can be solved with a quick Google search, and it has great documentation.
The first item on your learning list is obviously Solidity, the Ethereum smart contract language. This is the base for any decentralized application on the Ethereum platform.
Explore Node and React next; they are very popular for front-end development and are among the tools of choice for most DApp (decentralized application) developers. Write down the bonus Redux there as well.
Another important tool is Truffle Suite; it helps to “glue” your Solidity code to the front-end. With Solidity, Node, web3jc, and React, you can develop, test and deploy decentralized applications from Truffle Suite.
Learning Web3.0 and blockchain development may seem intimidating at first, but anyone can do it.
You won’t learn blockchain development in 1 week, but you can do it in 1 year of full dedication.
Step 3: Learn Constantly
There are many useful channels on YouTube where you can find quality content on the topic of blockchain development. Blockchain and technologies are developing very fast. Make sure that you always learn new things and update your skills.
Step 4: Start Development
Start small. Submit your code to Github and show your projects to other people. The development of smart contracts for the Ethereum testnets is free.
Also, write in detail about your experience and everything you learned. Write down the results of the work done. Maybe you’ve developed good habits that will give you an edge over other developers.
Step 5: Apply
By doing the above-mentioned, you will have a new portfolio that represents you as a blockchain developer. Describe recent skills and apply for a blockchain-related position.
Step 6: Do It All Again
If you manage to find a job after the first pass through the previous steps described, that’s great! Congratulations, you are truly a superstar.
If not, then return to the first step and go through the chain again. The blockchain space is evolving at breakneck speed. If you follow the latest trends in it, you will be one of the first few people in the whole world to receive this knowledge.
By repeating steps one through six, you will grow to become a source of valuable knowledge in the field of blockchain development.
Research on smart contract programming’s evaluation is pretty young, and there is still a long-term journey ahead to achieve its maturity. Lots of developments and updates are combined for Ethereum. This includes proof-of-stake and sharding, which will promote the blockchain.
So, it’s natural that there are problems, errors, and obstacles along the way, but one thing is sure, Solidity will remain one of the most practiced languages for developing Smart Contracts.