what triggered combineLatest?

Question

I have a few observables. And I need to know which one triggered the subscribe.

Observable.combineLatest(
      this.tournamentsService.getUpcoming(),
               


        

Answer 1

I am using RxJava in Flutter and I want to combine 12 different observables using the operator combineLatest.

I saw a function prototype that takes a list of observables and an implementation. but I am not sure how to do this, I am having trouble implementing the call method. Please check my code and do the needful.

Stream> get cities => _citiesController.stream;

Stream get city => _cityController.stream;

Stream get agentcity => _agentcityController.stream;

Stream get userpackages => _packagesController.stream;

Stream get email => _emailController.stream.transform(validateEmail);

Stream get firstName => _firstNameController.stream.transform(validateFirstName);

Stream get lastName => _lastNameController.stream.transform(validateLastName);

Stream get mobileNumber => _mobileNumberController.stream.transform(validateMobile);

Stream get dob => _dobController.stream.transform(validatedob);

Stream get appointmentdate => _appointmentdateController.stream.transform(validateappointmentDate);

Stream get pincode => _pincodeController.stream.transform(validatePincode);

Stream get gender => _genderController.stream;

Stream get address => _addressController.stream.transform(validateAddress);

Stream get agentname => _agentnameController.stream.transform(validateAgentName);

Stream get validSubmission => Observable.combineLatest9(

email,
firstName,
mobileNumber,
pincode,
dob,
address,
agentname,
_genderController.stream,
_cityController.stream,
_agentcityController.stream,
_packagesController.stream,
_appointmentdateController.stream,
(e, f, m, p, d, a, an, g, c, ac, pc, ad) => true,

);

Please let me know how to use combineLatest in my Flutter code.