Pavol KöglerJest + Enzyme unit testing in ReactTalking to my peers and friends, nobody really likes to write unit tests for frontend. And I can see why. I saw a few tutorials on how to…·9 min read·Oct 20, 2021----
Pavol KöglerHow microchips are bornEven though I work as front-end developer, I studied microelectronics at university. With this background it feels to me almost primitive…·7 min read·Jan 28, 2021----
Pavol KöglerSerial communication in ElectronFew months ago I came across an interesting project. Group of skilled electrical engineers developed machine that could regenerate old…·3 min read·Jun 23, 2020----
Pavol KöglerinWebtipsKnow your array methods in JavaScript!When I started working with arrays in JavaScript I always used for cycles to do operations on arrays. I was used to it from university…·6 min read·Jun 16, 2020----
Pavol KöglerinBetter ProgrammingHow to Create Modals in ReactWith Redux and Hooks·4 min read·Jun 3, 2020--2--2
Pavol KöglerinBetter ProgrammingHow to Take Snapshots in JestAn introduction to snapshot tests·5 min read·Mar 25, 2020----
Pavol KöglerinEnvironmental IdeasEcology for everyone — FoodIt may seem that one person cannot change global warming and pollution in this dirty world. But if we do only small changes in our lives…·6 min read·Mar 3, 2020--1--1
Pavol KöglerStreams in NodeJs — Our lifesaversNo, I will not talk about some fancy video streams. I will talk about much more boring stuff. If you are NodeJs developer, you probably…·5 min read·Feb 12, 2020----
Pavol KöglerinBetter ProgrammingHow To Prevent SQL Injection Without Prepared StatementsAvoid hackers adding a malicious SQL query into your parameter·6 min read·Aug 19, 2019----
Pavol KöglerinWebtipsStoring Filters to URL in React and Redux AppRecently I got task to store some filter options into url in a React + Redux app. It felt pretty simple as I’ve done it many times in…·4 min read·Aug 8, 2019----