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# Part 02 miroslav.binas@tuke.sk / [**SMART**](https://kurzy.kpi.fei.tuke.sk/smart)
## Example: Torch App

Turn On
[![Yarn](../images/logo-yarn.png)](https://yarnpkg.com/)
[![Metro](../images/logo-metro.png)](https://facebook.github.io/metro/)
[![Webpack](images/what.is.webpack.png)](https://webpack.js.org/)
![ReactJS vs React Native](../images/reactjs.vs.react.native.png) Notes: * https://www.simform.com/reactjs-vs-reactnative/
**React** is a **JavaScript** library for building **user interfaces**.
## Views
![Different Views in Android and iOS, but similar application](../images/diagram_ios-android-views.png)
## Common Core Components
![JSX](../images/logo-jsx.jpg)
`[<getter>, <setter>] = useState(<initialValue>)`
[Wat](https://www.destroyallsoftware.com/talks/wat) @garybernhardt
## Questions?