In the last part of this tutorial we finished all the functionalities of our smart contract. Unfortunately, we have a lot of code duplication in the update and delete function. We use the same for-loop to find a specific entry of our users array. In this video, we will extract…

We are going to continue our CRUD smart contract and finish the main features. You will learn: "Update" and "Destroy" in CRUD Delete an entry of a Solidity array

We will start a CRUD smart contract in Solidity. Crud stands for Create, Read, Update and Delete, and represent a very standard set of data operation that most application needs to do. Once you know these 4 operations, you are well-equipped to develop a large range of smart contracts. In…

In this video, we will build on the previous "Simple storage" smart contract, and store list of data instead of just a single piece of data. You will learn how to: Represent list of data with Solidity arrays Access a specify entry of array Get an array length

In this video, we are going to finish our simple storage smart contract, which can set and get the value of a variable. You will learn: Difference between transaction and calls How to specific calls in Solidity with view / pure keyword Getter functions automatically created by Solidity How the…

In this video we are going to create a smart contract able to store a variable. Very easy to follow! You will learn: how to persist data with state variables in Solidity how to update the value of of a state variable

The obligatory hello world tutorial! Here we go! In this video, I am going to show you how to create a simple hello world smart contract that is able to return a static 'hello world' string. You will learn: how to create a function in solidity how to call a…

Starting with Solidity smart contract is a bit overwhelming... the tools, the Ethereum Blockchain, the Solidity language... that's a lot to learn. I created this video for people who are total beginners and want to get started with Solidity smart contracts. We are going to use Remix, the online code…

Are you a beginner learning Solidity? Are you overwhelmed by the complexity of developing an Ethereum smart contract and don't know where to start? Well, I have built a course just for you! In Smart Contract 30, we are going to write 30 Ethereum smart contracts, one contract a day…

This tutorial is part of the series ToDo List Ethereum Dapp. This is the Step 9. Tutorials already published: (more…)