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Setup your first React Native app and publish to Play Store

React native is a framework for building mobile app with JavaScript leveraging ReactJs which basically uses native UI components. If you are familiar with ReactJs or come from front end background, Reactjs creates virtual DOM which act as shadow to the real DOM available. When an element changes, that change is reflected on the real DOM by Virtual DOM corresponds to each element. However, in React Native, there is no DOM rather than Native Components which are provided by platforms such as iOS and Android. There are no web views here.

Step 1: Set Up Environment

In order to build the eventual APK to upload to the store, you need to install Android Studio. After installing make sure the version of SDK is 27 as this is what react Native uses.

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Node.js Error Handling (The Good, The Bad, The Ugly) In an ideal world, everything works successfully. However in real worlds there always unexpected errors. For example, a connection to the database drops out for whatever reason. So as a best practice, developers should count these unexpected situations and handle them properly. That means we should properly send an error message to the client and also log the unexpected situation. In this article we only cover the exception handling and also, how can we improve the exception-handle functionality. Generate Error Let me demonstrate a real-world scenario, where some exception occurs. Here, we make a get request at URL https://www.some-unknown-url-1234.com/ and expect...
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Multi Containers Docker Using Docker Compose for Laravel Project Here we are going to create three containers with three different Dockerfiles. There will be three different containers are: mysql as mysql_lara and this container for the mysql database and it will be using 5009 port, Laravel project as app_laravel and the project is in the same root directory called test-app which will be using 5011 port, http or php server as lara_servphp7 which will be using 5013 port. Lastly, we will create network which is using bridge network. However, creating the docker environment for Laravel as following -  Create docker-compose file in the root and copy the following code and past...
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Docker for beginner Docker is an open platform for developing, shipping, and running applications. Docker enables you to separate your applications from your infrastructure so you can deliver software quickly. With Docker, you can manage your infrastructure in the same ways you manage your applications. By taking advantage of Docker’s methodologies for shipping, testing, and deploying code quickly, you can significantly reduce the delay between writing code and running it in production.   The way Docker works Docker uses a client-server architecture. The Docker client talks to the Docker daemon, which does the heavy lifting of building, running, and distributing your Docker containers. The Docker...
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Python at a glance Python is an interpreted, high-level, general-purpose programming language. Created by Guido van Rossum and first released in 1991 Python is a server side programming language. Python is targeted for almost all platforms Python is a modular language like nodejs Python is a indent sensitive language  Development environment setup Go to https://www.python.org/downloads/ and download latest (or earlier) version of Python for Windows OS Install Python using run as administrator in your local machine with features pip, tcl/tk (for winform app), test suite, py launcher. For more to install python environment you can visit the link. Checking Environment is OK or...
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