ios - RxSwift `.addDisposableTo(disposeBag)` causes memory leak -


i using heavily in companies project rxswift. , when running performance tests in instrument worrying problem appeared.

each time .adddisposableto(disposebag) gets called, instruments show memory leak around 10 bytes. there's no specific pattern of why happen, not using [weak self] in right places, happens no apparent reason.

some sample code:

class contactsviewmodel: nsobject {     fileprivate let disposebag = disposebag()     fileprivate let provider = authorizednetworking().provider      var contacts: variable<[user]> = variable([])     var suggestedcontacts: variable<[user]> = variable([])      func fetchcontact(suggestions: bool = false) {         activityindicator.showloadinghud(message: "fetching contacts...")         let observable = provider.request(suggestions ?             .suggest :             .searchcontacts(query: nil, global: false)).filtersuccessfulstatuscodes()         let mapped = observable.checkforerrors().mapobject(datalistresponse<user>.self)         mapped.subscribe { [weak self] event in             switch event {             case let .next(response):                 activityindicator.hideloadinghud()                 if response.success, let contacts = response.data {                     if suggestions {                         self?.suggestedcontacts.value = contacts                     } else {                         self?.contacts.value = contacts.filter { $0.contacttype == "friend" }                     }                 } else {                     log(.network, .error, "unable retrieve current user")                 }             case let .error(error):                 activityindicator.hideloadinghud()                 log(.network, .error, error.localizeddescription)             default:                 break             }             }.adddisposableto(disposebag) <- instruments show leak [6 bytes] @ line      } }

i've done research , have 1 version instrument might not understand rxswift , make there's leak in reality, there isn't. implementation has problems don't know of since have little experience in rxswift. appreciated.


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