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The most basic debugging tool is the built-in JavaScript debugger. In the simulator menu opened by "command + m" on Android and "command + d" on iOS you can find the "Debug JS remotely" position. The tool opened under "http://localhost:8081/debugger-ui" is the same one, as browser debugger, hidden under the "inspect" menu button. Although It seems complex Chrome Developer Tools offers only basic features such as logging output to console or using the network tab.
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iOS Debugging Tips & Tricks

Every developer knows that debugging is important. We spend a lot of time on creating breakpoints, stopping program executions and looking for solutions. There are some nice tips and tricks that help us to do it effectively. Here I will show you some of them.
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ARKit Continuation

Recently I published an article with the entrance to the ARKit which briefly presented the minimum knowledge that is needed to create something inside augmented reality. We know what is the ARSCNView for, why we need to implement the ARSCNViewDelegate and how to run the ARSession. The demo was pretty straightforward as its main purpose was to receive information from the camera and detect the currently visible surface by attaching proper graphic onto it. User interaction was only limited to pointing the camera at desired spaces and waiting for the results that were calculated on the fly.
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Some time ago I came across one problem related to the correct recreation of the state in the view. I tested various solutions on a separate project to learn about possible solutions. However, before I describe the exact problem that I came across, I will start with the complete basics. At the very beginning, let's try to answer the question - why should we actually save the state of the views?
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SVG is a vector format that can scale to any size without losing its quality, and it can do this while having a comparatively low file size too. SVG is amazing like that and preferred implementation on React Native Platform.
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Intro Nowadays, animations are an essential part of mobile apps and websites. When done properly, they make applications look smoother, attract users’ attention, and increase user engagement. One of the most famous animations is the lovely heart created by the Instagram team. Let me quickly show you how to create it in React Native.
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In 2017, we have seen an increased interest in the question of code sharing across React and React Native, mostly after Nicolas Gallagher took to the stage at React Rally to talk about react-native-web, a solution he has been using to build a web version of Twitter. The first minor version of the package (0.1.0) was released October that year, and earlier, in March, Microsoft published reactxp to NPM. Since then, both libraries have been actively maintained, albeit by a limited number of contributors. They are currently the only production-proven options for experimenting with “truly” cross-platform React, targeting Native and Web with a single code base.
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Getting started with CircleCI isn’t so hard, but understanding how it all works and what we can do with this tool is a little more complicated.
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So you are decided to include Machine Learning features in your app? Great! First step is already done. With no doubt you can expect a boost of possibilities for your startup.
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The materialized view is a powerful database solution that allow us to access the view’s data faster by “caching” its response. The materialized view query is executed once when the view is created, not when accessing the data as it is with regular database views. It is a great and worth using feature when we do not need a view to return the most recent data or we know that we will more often read the view’s data than we will modify them. There is only one small problem while using such view: we need to handle the refresh of its data manually.
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