Do you want to learn Solidity and create your own dApps and smart contracts? This free online course gives you a comprehensive overview that is aimed to be more accessible than the Solidity documentation but still complete and descriptive. ▶️ Multimodal Learning: Each tutorial comes with a tutorial video that helps you grasp the concepts … Read more
By the end of this article, we’ll face a very powerful and mildly confusing concept of function types. We’ll need a bit of our legendary focus and imagination to get through it, but after that, we’ll have an incredibly powerful tool in our toolbox! It took your author three rounds of reading the original documentation … Read more
In this article, we’ll learn about user-defined types in Solidity. It’s a somewhat shorter and simple article, but it’ll provide us with insight into how we can utilize user-defined value types as means of simple abstractions. It’s part of our long-standing tradition to make this (and other) articles a faithful companion, or a supplement to … Read more
In this article, we’ll learn about string literals and types, Unicode literals, hexadecimal literals, and enums. They’re not complex types, and getting to know them will be simple, but also prove very useful in our future endeavors through the Solidity programming language. It’s part of our long-standing tradition to make this (and other) article a … Read more
In this article, I’ll be going over the different types of state variables in Solidity and how to use them. State variables are one of the most important parts of any smart contract, as they allow us to store data that can change over time. This article is mainly focused on value types of state … Read more
With this article, we continue our journey through the realm of Solidity data types following today’s topics: contract types, fixed-size byte arrays, dynamically-sized byte arrays, address literals, rational, and integer literals. It’s part of our long-standing tradition to make this (and other) articles a faithful companion or a supplement to the official Solidity documentation. 👇 … Read more
With this article, we continue our journey through the realm of Solidity data types. 👉 Recommended Tutorial: Solidity Basic Data Types This time, we will focus on fixed point numbers, address types and address type members, and investigate when, how, and why they are used. Traditionally, our articles are running alongside the official Solidity documentation … Read more
Types are among the most important building blocks of a statically-typed programming language, and since Solidity falls into that category, we finally have the opportunity to entertain ourselves with this crucial topic. By learning about types, we’ll get more closely familiar with the Solidity features that are based on idiosyncrasies of a particular data type. … Read more
In this article, we’ll take a detailed look at the structure of a smart contract (docs). 💡 We’ll learn about state variables, functions, function modifiers, events, errors, struct types, and enum types. We have recognized most of these elements in action in the previous articles, especially in the ones where we had real examples of … Read more
There are four major ways to install the Solidity compiler: Install Solidity Compiler via npm Install Solidity Compiler via Docker on Ubuntu Install Solidity Compiler via Source Code Compilation Install Solidity Compiler via Static Binary and Linux Packages In this tutorial, we’ll have a quick look at each of them and give you a link … Read more
In the previous articles, we looked at some of the representative examples of smart contracts representing possible real-world scenarios. Our main focus was on capturing the essence of each case, without particular attention given to the general structure, i.e. layout of the respective source files. However, in this mini-series starting with this article, we will … Read more
This article continues on the Solidity Smart Contract Examples series and implements an example of a modular contract checking that the balances being sent between the addresses comply with the requirements (docs). We’ll first lay out the entire smart contract example without the comments for readability and development purposes. Then we’ll dissect it part by … Read more