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Posted by Stanislav Miklik | 24 02 2017| javascript, react, react-native

Recently we were invited to help others to resolve compatibility issues between IOS and Android. They have started with React Native but have developed their application only for Android. And then they wanted to make it work also on IOS. Here are some tips. Android only components Well, this one is obvious. Try to avoid components...

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Posted by Stanislav Miklik | 19 12 2016| javascript, react, react-native

What do you want for christmas? We wanted a color picker for React Native but we could not find any. Therefore we made one for you. You can find it on our github. But one image is worth more than a thousand words. It works both for Android and iOS, supports multiple color formats and easily...

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Posted by Stanislav Miklik | 30 10 2016| javascript, react

This year we have decided to make our first open source project. It is context menu component for React Native. However right now we don’t want to talk about the component itself but rather talk about what have we learnt by doing it. Motivation Why have we decided to make it in first place? We...

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Posted by Martin Bielik | 09 09 2016| javascript, react, redux, testing

In this post I’ll try to show you how convenient it is to test side effects using redux saga. To read this post you should know something about generators and redux-saga library. Here are some great articles about this topic: The Basics Of ES6 Generators Using redux-saga To Simplify Your Growing React Native Codebase Docs – Introduction To test...

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Posted by Martin Bielik | 31 08 2016| programming, tech-talks, testing

When it comes to dynamic and static typing there are big discussions and many opinions all around. I’ve collected following thoughts about this problem. Each one of it is questionable because programming is not black & white world. This is what is said in general (the truth is probably somewhere in-between): Static typing: it is...

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Posted by Martin Bielik | 09 08 2016| javascript, react, testing

Nowadays in the ever changing “world of JavaScript and React” there are many libraries which could be used to test React components. It could be hard especially for newcomers to find out which library suits their problems best. In generall test frameworks are expected to: provide test structure (Mocha, Jasmine, Jest) run tests and display test...

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Posted by Martin Bielik | 23 12 2015| javascript, tech-talks

Nodeschool workshops have finally started in Bratislava (hosted by Progressbar). At the first meet-up we set up node environment and went through several workshoppers from the nodeschool site. There were people from multiple areas and with different knowledge of javascript (from beginners to experts). Workshop was more or less self-organized with a possibility to ask senior programmers for...

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Posted by Stanislav Miklik | 07 12 2015| tech-talks

This tech talks was quick presentation of our first steps in server monitoring. And at the same time it was simple introduction to Kibana and Elasticsearch. What to collect? We started with already provided Spring Boot metrics. Since we wanted to transform the input a little bit (compute diffs between snapshots, count summary hits for...

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