Month: November 2020
How to unit test your Gatsby blog with React Testing Library
Writing unit tests will keep your Gatsby blog bug-free, and leads to more maintainable code. This post covers how you can use Jest and React…
Take Off with AWS and Webiny
Beyond MVP The goal was to develop an MVP as a value-added module in the care sector in cooperation with the Versicherungskammer Bayern, S-Markt &…
PySpark fillna() & fill() – Replace NULL Values
In PySpark, DataFrame.fillna() or DataFrameNaFunctions.fill() is used to replace NULL values on the DataFrame columns with either with zero(0), empty string, space, or any constant…
PySpark How to Filter Rows with NULL Values
While working on PySpark SQL DataFrame we often need to filter rows with NULL/None values on columns, you can do this by checking IS NULL…
Javascript object re-formatting
asj 4 hours ago. I have data as follows: { “2011”:{ “01”:{ “01”:[ { “date”:”2011-01-01″ }, { “date”:”2011-01-02″ } ] }, “02”:{ “01”:[ { “date”:”2011-02-02″…
Spark Installation on Linux Ubuntu
Let’s learn how to do Apache Spark Installation on Linux based Ubuntu server, same steps can be used to setup Centos, Debian e.t.c. In real-time…
Simplifying your application state management with Recoil
In Webiny we have the Page Builder Application that was built with help of redux as global state management. We decided to switch our Page…
Deep Dive into Page Lifecycle API
Browser API Every Frontend Developer Should Know Photo by Jeremy Perkins on Unsplash As users, we always like to multi-task while browsing web pages. So…
I’m Ready to check if the images or videos are loaded!
I’m Ready I’m Ready to check if the images or videos are loaded! Demo / API Features Check that all images and videos in the…
Prefetching and dynamic routing with Next.js
Server-side rendering (SSR) has become a widely adopted technique to enhance the performance and SEO of web applications. And while static site generation (SSG) is…
Extension to allow users to easily identify phishing attempts
Firefox: https://addons.mozilla.org/en-GB/firefox/addon/originmarker/A browser extension to allow users to easily identify phishing domains all done client side.With a marker in the bookmarks bar that changes based…
A JavaScript syntax highlighter in 40 lines of JavaScript
GitHub – victorqribeiro/syntax: A very simple JavaScript syntax highlighter
