Diving into storage references and smart contract storage layout. — This is Part I of the “All About Data Locations” sub-series. In today's article, we cover in more detail an important data location in the EVM: the smart contract storage. We will see how the layout of the contract storage works, storage references. how to write to the contract storage…

A deep dive into storage, memory, and calldata — This is a long, detailed, and in-depth read. But don’t be afraid. Settle in with a nice coffee or your favourite drink. It will all be fine. See the “Table of Contents” section below to jump into the section you are interested in. Today, we explore a new and essential…

Implicit vs explicit conversion in Solidity, and examples to understand conversion between types. — Today's article is quite in-depth, technical and detailed! We explore conversions between different types in Solidity. We main objective of this article is for you to understand “what is the difference between implicit conversion vs explicit conversion in Solidity”. We will then cover each possible conversion between types, still using…

Today we explore for, while and do ... while loops in Solidity, using contracts examples from The Graph. …

Understand through Smart contract examples — Everyone writing code on a daily basis knows what a if / else statement is. But still, since we are in the “All About Solidity” article series, we’ll cover everything about the Solidity smart contract language! No bent rules! We cannot omit conditionals! In today’s article, we will still cover…

In this article, we describe what is the ABI in Solidity, how it helps describes smart contracts and how it translates to EVM bytecode. We will also look at several Solidity built-in methods for encoding + decoding as per the ABI specification. Table of Content Smart Contracts ABI ABI vs Bytecode ABI = Specification for encoding and…

Dive into import statements with Solidity — Table of Contents Modules and Code Modularity. Solidity Imports. Types of Solidity Import Syntax. * Global Import * Specific Imports Import Aliases. * Global Alias * Alias Specific Which import syntax to use? What can you import from a Solidity file? Solidity Import Syntax Cheatsheet Modules and Code Modularity Before diving into Import statements in Solidity, let’s…

When you flip a light switch, the light goes on. You do not care “how” the switch turns the light on. You just care that “it does turn the light on”. Table of Contents The idea behind interfaces What are smart contract interfaces? Interfaces in Solidity How to define and use an interface in Solidity? Functions defined inside an interface. Function visibility inside interfaces Benefits of using contract interfaces