Computes a new Observable from multiple observables. The new Observable will automatically update and notify listeners whenever any of the source observables change.
An array of source Observables to derive the value from.
A function that takes the values of the source observables and returns the derived value.
A new Observable that will contain the derived value.
Computes a new Observable from multiple observables. The new Observable will automatically update and notify listeners whenever any of the source observables change.