This is the companion prototype to a 2-part tutorial where we explore the utilization of variables to help us to recreate Apple’s native iOS Weather app. In both tutorials, we go over the different ways Proto.io makes variables available to use in building your prototypes - from the simple example of setting a value in the variables manager and utilizing that value in the prototype to creating and setting a custom variable based on the property of a container and then to the more advanced usage of ternary operators to affect an outcome based on conditions surrounding that custom variable.

http://docs.proto.io/videos/ios-weather-app-variables-tutorial-part-1/
http://docs.proto.io/videos/ios-weather-app-variables-tutorial-part-2/