Storing Data Locally in a Intel XDK App
This post is a part 53 of Intel XDK Complete Tutorial post series. I wrote an article on how to store data locally in cordova based apps. As Intel XDK builds cordova apps therefore the technique is...
View ArticleExpress.js Middleware Tutorial
Developers who are new to Express often get confused with the difference between route handler and middleware. Therefore they also get confused with the difference between app.use(), app.all(),...
View ArticleES6 Reflect API Tutorial
This post is a part 18 of ECMAScript 6 Complete Tutorial post series. Object reflection is an language ability to able to inspect and manipulate object properties at runtime. JavaScript already had...
View ArticleFind Recorded Audio File Location in Cordova
Many people use the Media Plugin to record audio in cordova apps. Here is an sample code that shows how to record: var extension = null; document.addEventListener("deviceready", function(){...
View ArticlePointing Domain to AWS Elastic Load Balancing
Amazon ELB is an auto scalable load balancer that sits in front of EC2 instances and distributes traffic between them. Client communicates with ELB not with EC2 instances directly. When you create a...
View ArticleCalculating Nonce for Raw Transactions in Geth
Here is the code to calculate the transaction nonce for raw transactions in Ethereum’s geth client. function getNonce(address, callback) { web3.eth.getTransactionCount(address, function(error,...
View ArticleWriting Upgradable Smart Contracts in Solidity
As you must be aware that smart contracts are immutable programs that run exactly as programmed without any third party interface. Smart contracts cannot be modified once they are deployed which is...
View ArticleBlockchain based Identity, Records Management and Voting using AWS
The purpose of tutorial article is to understand the architecture and thought process of building a blockchain based decentralised identity, records management and voting solution using AWS for the...
View ArticleEIP-1557 – Ethereum Transaction Fees and Block Size
Post London upgrade which implements EIP-1559, Ethereum has changed how block size and transaction fees works. Block Gas Limit Earlier Ethereum block gas limit was calculated using the below formula:...
View Article
More Pages to Explore .....