A step by step tutorial to develop your first Ethereum Smart contract and interact with it through a simple web DApp + Vue.js bonus— Part 1 — Here the PART 1 (here the PART 2) of a step by step tutorial to develop your first Ethereum Smart contract with full demo code available at this GitHub repo 🎉 Nowadays we often hear about cryptocurrencies, blockchains, wallets and even more in the future we will hear about…

The most commonly used (and most wanted) regexes UPDATE 10/2022: See further explanations/answers in story responses! After some time I thought about publishing this article (see my previous tutorial) with the regex I used most in the projects on which I was involved. Write in the comments any regex that…

WORKING DEMO HERE — GITHUB REPO HERE Several times I had to make applications that gather information that was then represented or sent via PDF: the UI (mainly HTML forms) and the relative PDF output often differed a lot, let alone the tedious maintenance or evolutive implementations… so why…

A simple Angular client based on the shining RxJS WebSocketSubject — UPDATE -> Repo working with rxjs 6 and Angular 6 Given the wide interest in my previous article on WebSocket, Node and Express (thanks to everyone 😅) I created a simple Angular client that allows you to communicate with the server made in the previous tutorial (PS: I also…

CUD operations, transactions and batched writes deep dive — In a previous article I have already talked about the boostrap of a serverless application using Cloud Firestore and Angular! 🎉 In this article we will start from a basic situation to deepen its interesting features (here the repo).

Here is the step-by-step list to test the evolution of Firebase: Cloud Firestore (beta)! 🎉 Cloud Firestore is the “evolution” of the Firebase Realtime Database (see my previous article), which captures all the extraordinary flexible and scalable database, mobile and web development features by adding interesting query creation tools (the…

A tutorial on starting to solve Free Code Camp’s “Book Trading” challenge — Update Checkout my new Angular + Cloud Firestore (a “new version” of Firebase) article 😙. In this tutorial we will use Angular and Firebase (with the mighty Typescript) to implement a real-time "Book Trading" web application Working DEMO here! 🎠 Github repo here! 😙 The solution must adhere to the…

Today we look at one of the lesser known patterns, often unused and therefore more interesting if used appropriately 😅. All the examples are written in Typescript… Even if you do not know it, notice that I chose this language because it adds optional static typing to Javascript providing a…

Sometimes you have to insert sample values ​​within a SQL table to test its performance on a massive number of rows in order to identify some corrective actions: adding clustered indexes or not, views, statistics, etc… Are you looking for a script that quickly inserts a large number of rows…