Ethereum

Solidity has many useful features that enable us, smart contract developers, to make safe, secure, and functional smart contracts. We have discussed other interesting Solidity features, and this time, we’ll focus on one very important feature of Solidity called function visibility. It determines who can call a function and who can access its variables. In … Read more

In this article, we’ll get a closer look at four main mechanisms for error handling in Solidity: functions assert, require, revert, and another approach based on exceptions. These mechanisms will help us tremendously in achieving stable and secure smart contracts, so this is the right moment to introduce them and lay the ground for a … Read more

In this article, we’ll learn about checked and unchecked expressions and when to use each of them. 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 for this article’s topic. We should consider whether an expression should be checked or unchecked … Read more

As promised in the previous article, we’ll get more closely familiar with the concept of scoping next. We’ll explain what scoping is, why it exists, and how it helps us in programming. 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

In this article, we’ll learn more about variable declarations in Solidity and further explain some of their specific behavior. To keep the article more succinct, we’ll focus on the next subject, scoping, in the next article. It’s part of our long-standing tradition to make this (and other) articles a faithful companion or a supplement to … Read more