alpha questions

alpha answers

• React How to set an element's ref value using a variable
• Export react jsx-components in index.js files
• React Native saveToCameraRoll failed with `Permission denied` error on Android
• Round negative value to 2 decimal places
• How to navigate to different screen and get back to the screen from where its navigated using DrawerNavigator?
• How to set headerMode on some routes but not others. (React Navigation)