Welcome to another project of a decentralized dapp with React and ether.js. This is part 1 of our four-tutorial series on creating a decentralized web app to sell ebooks: 👇 Project Scenario We will build an ebook stall from which anyone can buy an ebook on a monthly subscription basis. The buyer will submit his … Read more
One of the presiding JavaScript libraries for interacting with the Ethereum blockchain is ether.js. The ether.js library, only 88 KB compressed in size, is remarkably smaller than the web3.js library. Because of that, web apps load more quickly if you use the ether.js API. This constantly improving library has already been popular among developers for … Read more
This tutorials shares my experience of creating a simple Python script that warns me if crypto price data (e.g., BTC or ETH) crosses a certain threshold. Why would I need this? Well, the script can be useful for trading signals if I want to react quickly. While I don’t really trade, this script may be … Read more
In this article, we’ll continue on the topic of the assignments, which we started in the previous article while talking about tuples. This article’s topic will focus on possible challenges when dealing with arrays and structs and the right approaches to resolve them. It’s part of our long-standing tradition to make this (and other) articles … Read more
In this article, we’ll start familiarizing ourselves with the order of evaluating expressions in Solidity. Plus, you’ll learn about multiple assignments (tuple assignments). Let’s go! 💪 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. Order of Evaluation of Expressions Some … Read more
Salted contract creation uses cryptographic “salt” to add an additional layer of security to a smart contract. Salt is a random string added to the contract code to make it harder for an attacker to reverse engineer the code and gain access to the contract. This makes the contract more secure and helps protect the … Read more
In this article, we’ll take a closer look at how contracts are created, both directly, i.e. while being implicitly deployed on the blockchain, and indirectly, i.e. when their creation is triggered by another contract. It’s part of our long-standing tradition to make this (and other) articles a faithful companion, or a supplement to the official … Read more
Welcome to the second part of the series. In the first part, we have seen how web3.js helped the react frontend to connect to the smart contract. 👉 Recommended Tutorial: Learn to Build Smart Contracts in React with web3.js: Here’s How! (1/2) We explored the power of the “web3.eth” attribute to call the data from … Read more
A question often asked by newbie learners while developing the smart contract is, “How to connect my frontend code with the smart contract?”. The answer should be web3.js till day. web3.js has a collection of libraries that allows you to interact with a local or remote Ethereum node. Consider it an interface connecting the front … Read more
How to Sell Coupons on ETH? Creating your own sample dApp in four parts: Welcome to the last part of the series. 🛑 Note: This is just a training “fun” dApp that shows you how to use React, Truffle, and Solidity. It is not a real dApp with real functionality! Imaginary Scenario: Finxter academy has … Read more
How to Sell Coupons on ETH? Creating your own sample dApp in four parts: Welcome to the front-end journey for the Finxter coupon Dapp. 🛑 Note: This is just a training “fun” dApp that shows you how to use React, Truffle, and Solidity. It is not a real dApp with real functionality! Imaginary Scenario: Finxter … Read more
How to Sell Coupons on ETH? Creating your own sample dApp in four parts: Welcome to the 2nd part of the series. In this part, we will see the implementation of Solidity code as we build the smart contract gradually. 🛑 Note: This is just a training “fun” dApp that shows you how to use … Read more