I have come to enjoy coding in Solidity because it offers so much in innovative features.I have written about the "_" modifier in a previous article. In this article, I wish to document what emit in Solidity does.
This is the 4th and final part of the Ethereum IOT Kid Grounding Device project. In this part, I will focus on describing the process of putting together the PIR sensor to write to the Ethereum Blockchain whenever the kid moves. I will also discuss my thoughts behind this project, explaining where it is lacking and how I could make it better in its next iteration.
This is part 3 of my Ethereum IOT Kid Ground Device project. In this part, we will discuss the codes of the web service backend written in Node.js and running as a server application. You may read part 1 here and part 2 here.
This is part 2 of my Ethereum IOT Kid Grounding Device project. In this part, we will discuss the business logic behind Grounder.sol, the Smart Contract that does the real work behind grounding my kid. You may read part 1 here.
I like to equate Smart Contract to the business logic layer of conventional apps which developers would have developed as JSON web services in tools such as node.js (if you like JavaScript) or django (if you like Python).
Internet of Trusted Things (IOTT) is a recently-coined term that explores the integration of Internet of Things (IOT) with Blockchain.
Solidity as a programming language has been most intriguing for me because of its many features that I haven't come across in languages that I have been more familiar with. One example is the underscore like the one in line 10 below.
This article explores the technique of getting one Smart Contract to call another Smart Contract and is a follow-up to the Escrow Service article that I wrote in May 2018. The Safe Remote Purchase Smart Contract is, in my opinion, the clearest example to explain Smart Contracts to anyone who needs to understand what it does. Safe Remote Purchase has several quirky characteristics. In this article, I will explain one of them.
Syncing to the Ethereum Blockchain has always been a challenge particularly for me.
This is the final part of the Lottery Smart Contract series that I started 2 weeks ago. You are read part 1 here and part 2 here. In this final part I will be walking through the codes of the Lottery Smart Contract to explain what some of the more important lines of codes do.
The Codes
This is part 2 of the "Lottery as a Smart Contract" series. In part 1, I described the business logic behind the Lottery Smart Contract. Here, I will demonstrate how this contract is executed. To run this, you will need:
