Beginners' Guide to Learning Solidity

Beginners’ Guide to Learning Solidity

What Exactly Is Solidity?


Solidity is the programming language that enabled Ethereum to go beyond Bitcoin-style, peer-to-peer cryptocurrency to become “one computer for the entire globe,” as one of its founders described it.

Dr. Gavin Wood, who worked on Ethereum alongside Vitalik Buterin, suggested it in 2014. Solidity is the programming language used by the No. 2 blockchain’s self-executing smart contracts. Solidity is the language that everything from decentralised finance (DeFi) platforms to crypto games and supply chain management applications are built on because decentralised apps — DApps — are essentially highly complicated smart contracts.


Essentially, everything that runs in the Ethereum Virtual Machine — the Ethereum’s isolated compute engine where all smart contracts are produced, performed, and executed — can and is designed in Solidity.


Advantages of Solidity


Solidity provides a lot of advantages that have aided in the growth of Ethereum. For starters, it was created to be relatively easy to use by anyone with a basic understanding of programming languages like Javascript or C++.

Furthermore, because its smart contracts are established on the blockchain, they can’t be changed or removed. That implies Ethereum is a very safe way to perform what it was supposed to do: transfer anything of value using either native Ether tokens or compatible but white-labelled ERC-20 tokens.

How to Link Your MetaMask Account to Other Blockchains


Solidity’s Limitations


However, that final point is a double-edged sword, since it implies that any Solidity smart contract must be constructed flawlessly. “Code is law,” as cryptography specialists like to remark.


Mistakes can’t be reversed, and attacks can only be corrected by changing the Ethereum code, which necessitates the cooperation of individual nodes, which isn’t always available, at least not quickly.


That was an issue with the 2016 DAO attack, which stole $60 million via an EVM weakness termed re-entrancy — one of a handful of known exploits — as well as the Aug. 27, 2021 hack, which triggered a fork in the Ethereum network. The vulnerability was known in both situations, and a remedy had been provided by the time it was exploited.


Coinbase, the biggest cryptocurrency exchange in the United States, introduced Solidify, an automated audit tool for detecting and classifying smart contract hazards, in July. The purpose of the tool, as its name implies, is to enhance Solidity smart contracts by identifying possible problems, which Coinbase undertakes as part of its thorough but time-consuming assessment of protocols whose coins it is contemplating listing.


How Long Does It Take to Master Solidity?


Solidity is a high-level, object-oriented programming (OOP) language that was created specifically for the Ethereum blockchain and is largely utilised by it. OOPs let programmers create programmes using pre-built code snippets.


Solidity was created with anybody having a basic understanding of other, more mainstream coding languages in mind, such as C++, Java, JavaScript, and Python. This means that users who are already familiar with broad programming principles and the aforementioned coding languages will find Solidity easier to learn. It might take anything from a month to six months to complete.


The second half of this post, on the other hand, could be for you if you have no concept of how programming works and your only understanding is that of a mysterious super programmer. There are various courses available for total novices to learn the fundamentals of Solidity, even if they have no prior programming experience.


What is the average salary for Solidity developers?


But first, why would you waste hours of your time learning how to code in Solidity when you could be watching the price of the next great meme token on CoinMarketCap?


A Solidity developer’s basic compensation varies from $125,000 to $145,000, according to cryptocurrencyjobs.co. Solidity engineers will be in high demand as the crypto industry grows and demand for crypto employment grows.
Have I yet persuaded you of my point of view? So, let’s get started with CryptoZombies and studying Solidity.


Beginner’s Guide to Solidity with CryptoZombies


CryptoZombies, a free, interactive coding school used by over 400,000 students to learn how to develop Blockchain DApps by constructing a simple video game, is one of the finest methods to learn Solidity.

Beginners' Guide to Learning Solidity


Basic to intermediate smart contract design, and advanced Solidity, which includes testing and deploying DApps like your zombie game, as well as developing oracles that provide trustworthy outside data that smart contracts may use to choose when to execute.


Creating Your Crypto Zombies (Basic Lesson)


The basic lesson plan starts with setting up your zombie factory, which includes creating a blockchain-based database of individual zombies, a method for creating new zombies, and a numerical “DNA” function that controls each zombie’s appearance, as well as the appearance of the other creatures they infect. To put it another way, I’m creating the characters.


There are six courses in all, each with 11 to 15 stages that address various Solidity design topics. These contain both a very clear, simply written description of what you’re doing and why you’re doing it, as well as coding fields that guide you through the process of writing the code to construct the smart contract parts of the game.

This is where you’ll need some coding experience, although it mostly boils down to knowing the vocabulary and fundamental principles – code samples are used, and each chapter includes a “check answer” button that provides you the correct answer if you’re wrong.


For example, establishing structs — giving the zombie a name and a DNA string — making the zombie database public, and using that DNA information are all examples of this.

CryptoZombies Applied Solidity Concepts


The second set of curricula focuses on adding and defining game dynamics by allowing zombies to spread by feeding on and infecting other lifeforms. The lesson plan creates a way to infect CryptoKitties by using their DNA information to create new zombies without actually damaging the expensive NFT avatars.

Zombie snacks can be humans built in the game, but the lesson plan also creates a way to infect CryptoKitties by using their DNA information to create new zombies. That is, you must learn how to connect your smart contract to an external contract.


Making zombies ownable – giving one user unique capabilities — using mappings and addresses is one example. It then proceeds on to developing the CryptoKitties interface and identifying how the genes taken from them are used to construct zombies with new qualities, such as tails, to match the eye colour and shape, skin tone, and outfit design.

After that, there are further tutorials addressing topics such as making CryptoZombies ownable, paying Ethereum gas transaction costs, and keeping zombies safe.


Advanced Lesson: Creating Zombies NFTs


Following that is a battle system; using the ERC-721 standard to create non-fungible tokens — NFTs — that hold a unique zombie, as well as “outsourcing” the need to create an auction system that allows users to buy, sell, and trade zombies; and developing a front-end user interface that includes everything from MetaMask wallet interaction to transaction management.

The advanced lessons include error-checking smart contracts, deploying smart contracts, and constructing oracles. In addition to Solidity, there are a few instances where JavaScript is required.

Added Information


The “Beyond Ethereum” curriculum then moves on to non-Ethereum blockchains, such as the Diem (previously Libra) stablecoin, the Ethereum-based Binance Smart Chain, and the use of zero-knowledge proofs (zkSync) to secure token transfers, among other things.

Then there’s a zombie game that taught you how to create blockchain DApps and smart contracts, which is a good thing at a time when many blockchain startups are stalled by a “severe supply scarcity” of blockchain engineers.

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