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Most modern smart phones have a built-in fingerprint sensor. On iOS, this feature is called **Touch ID** whereas on Android, it is generally referred to as "Fingerprint Authentication". People most commonly use it to unlock their device by simply pressing their finger on the fingerprint sensor.  It is a cool technology and as a React-Native developer you can actually integra

Do you wish your vagrant synced folders to have better performance? Especially if your host machine is running Linux. Here are some tricks to speed it up. ## Set up a synced folder [Vagrant](https://www.vagrantup.com/docs/index.html) is a convenient tool for quickly setting up your dev server, with just one `vagrant up` from the command-line, every team member can test new features locally. For me

##  ## Static Type Checking is Life, Static Type Checking is Love Javascript has been a hot topic for web developers for some time now. It's fast, runs everywhere and offers many wonderful frameworks such as Angular and React. However, its lack of static typing can be a real pain for developers, bugs only appear at runtime, are hard to find and code refactoring

Bootstrap was created at Twitter in mid-2010 by [@mdo](https://twitter.com/mdo) and [@fat](https://twitter.com/fat). It provides a lot of UI plugins easy to implement. You've probably already used it but have you looked at how it worked? Together, we will try to make another plugin using the same best practices as Twitter. Through this tutorial I will introduce some JavaScript concepts like protot