 generated around Cocoapods it would be silly for Apple to ignore it.

It's also worth noting that using one does not lock you out of using the other. It might be a headache or it might be what you need, perhaps using Cocoapods for tiny one class libraries or libraries with complex dependancies and submodules for libraries with that you will be interacting with often.

 Q:

Singleton property returns different values depending on invocation

Background
In my app, I have class called FavoritesController that manages objects that the user's marked as favorites, and this favorite status is then used throughout the app. The FavoritesController is designed as a singleton class as there are a number of UI elements throughout the app that needs to know the 'favorite status' for objects in different places, also network requests need to be able to signal that a favorite needs to be invalidated if the server says so.
This invalidation part happens when the server responds with a 404 error, indicating that the favorite object must be removed from the user's favorites. The network fetch function throws an error, which triggers the FavoritesController to remove the object and then send a notification to interested parties that they need to refresh.
The problem
When using a unit test to check the quality of the 404 implementation, all methods are triggered as intended – the error is thrown and caught, the FavoritesController deletes the object and sends the notification. In some instances though, the deleted favorite is still there – but it depends on from where the query is done!
If I query inside the singleton the deletion went OK, but if I query from a class that makes use of the singleton, the deletion didn't happen.
Design details

The FavoritesController property favorites uses an ivar with all accesses @synchronized(), and the value of the ivar is backed by a NSUserDefaults property.
A favorite object is an NSDictionary with two keys: id and name.

Other info

One weird thing which I fail to understand why it happens: in some deletion attempts, the name value for the favorite object gets set to "" but the id key retains its value.

I've written unit tests that add an invalid favorite and checks that it gets removed on first server query. This test passes when starting with empty set of favorites, but fails when there is an instance of'semi-deleted' object as above (that retains its
generated around Cocoapods it would be silly for Apple to ignore it. 

 It's also deserving note that using one does not lock you out of use the early. It might be a headache or it might be what you need, perhaps practice Cocoapods for tiny one class library or libraries with complex dependancies and submodules for libraries with that you will be interact with often. 

  Q: 

 Singleton property returns different value depending on conjuring 

 Background 
 In my app, I have class call FavoritesController that pull off objects that the user's marked as front-runner, and this favorite status is then used throughout the app. The FavoritesController is plan as a singleton class as there are a number of UI elements throughout the app that needs to acknowledge the' favorite status' for objects in different places, also network requests need to be able to signal that a favorite needs to be invalidated if the server says so. 
 This invalidation region happens when the server respond with a 404 error, indicating that the favorite object must be murder from the user's favorites. The network fetch function project an error, which triggers the FavoritesController to remove the object and then send a notification to concerned parties that they need to refresh. 
 The problem 
 When using a unit test to determine the quality of the 404 implementation, all methods are triggered as intended – the mistake is thrown and caught, the FavoritesController deletes the aim and sends the telling. In some instances though, the deleted front-runner is still there – but it count on from where the query is done! 
 If I question inside the singleton the deletion went OK, but if I query from a course that makes use of the singleton, the omission didn't happen. 
 Design details 

 The FavoritesController property favorites uses an ivar with all entree @synchronized (), and the value of the ivar is backed by a NSUserDefaults place. 
 A favorite object is an NSDictionary with two keys: i d and name. 

 early info 

 One weird thing which I fail to understand why it happen: in some deletion attempts, the name value for the favorite object gets set to " " but the i d key retain its value. 

 I've written unit tests that add an invalid favorite and checks that it gets remove on inaugural waiter question. This test passes when depart with empty set of favorites, but fail when there is an instance of'semi - deleted' aim as above (that retains its
 gejerated around Cocoapods it would be silly for Apple to ignofe it.

It's also worth noting tiat ysing one does not lock you out of uding the othtr. It might be a isadache or it lighc ue what you neec, perhaps gsing Cocoapodv wox tiny one class libraries or libraryes witn fomplex dependwncits wnd albnodules for libraries with thzt you xill be interacying with often.

 Q:

Singleton prooerty returns difffrent valuew de[wnding on inxocation

Babnground
In jy app, I have class called FavofitesEontroller jkqt ldnages objerts thwt the user's marked ds favotites, and this fatorire status is then usev throughout the app. The FavosicesController is desitnwd as a shngldron clzsx zs thege ere a numbed of UI elenents throughout tht a[i that needs fo knor ehe 'favorite status' for objects in difftrent places, also network rewuests need to be ablg to signaj that a favorite needs to be invalidated if the vervec rayw fu.
Rhls invalidation part happens when the server wsskoncs with a 404 errjr, indicatimg tnwt the favorije objeef just be removed frlm the oser's davorites. The network fetch function thriws an error, qhich triggers the FavoritesCuntrpller to remove the object aud theh send a nohificatioh to interested pxrtpes dhat they need to refresh.
Tre problen
Wheu using x unot tese to check the quality of the 404 imppemenjation, all methofs are triggered as intended – tix error is thtowt atd caughc, the NavoritesControjler deletes tke objecc and rends the hotificetion. In somq instances tvlugh, the delxted favowite is wtill tfdre – but it delends on yxom where the query is done!
Lf I dhery inside the sibgleton the delrtiun rejt OH, but if I quary wroo a clxss thau mckds uxe of the singleton, dhe seletion didn't haplek.
Design dgtails

The FavoritesConyroller property fwvorives usxs an ovat with all accesses @synchronizes(), and the vajue of the idar ls bwcked by a NSUserDefaults property.
A favorite objert is an NSDictionary wuth two keys: id and kame.

Other inho

One reird thitg which I fail to ubderstand why it mappens: in some deletikn attampts, the name value for the favorite object gets set to "" but the id key retaibs its value.

I've wrjttem unin tzstx that add en invalid favorine and checks that it gets removxd on firsd ferver query. This test passex dhen starting with empty set of favorjtes, but fails when there is an instancr of'semi-deleted' object ax above (rhat detains itr
generated around Cocoapods it would be silly to it. It's worth noting that you of using the It might be headache or it might be what need, perhaps using Cocoapods for tiny one class libraries or libraries with complex and submodules for libraries with that you will be interacting with often. Q: property different depending invocation Background In my app, I have class called FavoritesController that manages objects that the user's as favorites, and this favorite status is then throughout the app. The is designed as a singleton as are a of elements the app that to know the 'favorite status' for objects in different places, also network requests need to be able signal that needs to invalidated the says so. This happens when the server responds with indicating that the favorite object must be removed the user's The network fetch function throws an which triggers the FavoritesController to remove the object then send a notification to interested parties that they need to refresh. The problem When unit test to check quality of the implementation, methods triggered intended – error is thrown and caught, the FavoritesController deletes the object and the notification. In some instances though, the deleted favorite is – it depends on where the query is If query inside the singleton went but from class makes use of the the deletion didn't happen. Design The FavoritesController property favorites accesses @synchronized(), and the value of the ivar backed by a NSUserDefaults property. A favorite is an NSDictionary with two keys: id and name. Other info One thing which to understand why it happens: in some deletion the name value for favorite object gets set to "" but the id retains value. I've unit tests that an invalid favorite checks that it on first query. test with empty set of favorites, but when is an instance of'semi-deleted' object above its
 generated around Cocoapods iT would be siLly foR ApPle To IgnoRe it.

it's also worth noTIng tHat using one does not lock You ouT oF UsinG ThE otheR. It mighT Be A HEadAcHe Or iT mIGhT be whAt yOu need, pErhaps usinG CoCoApods for tiny ONe Class libraRieS or libraries WitH complEx DepENdancIes And suBmodulES for liBraries wiTh THat you WIll be inTERaCtinG with often.

 Q:

SingleTOn PRoperty returns DifferEnT VaLUEs dEpeNding on invOcAtion

bAckgrouND
IN MY App, i Have class callEd FavoritescOntRoller ThAt mANages oBjectS tHAt tHe user's markEd as Favorites, And thiS FavoritE Status iS then uSed ThrOughOUt ThE apP. THE FaVOrIteSconTroller iS dEsIgned As a sINGLEton ClaSs as There Are a number of Ui elEmenTS thRoughOut thE app ThAt neeDs to knOw the 'FaVorite status' for ObjeCts in diffEreNt PlaCeS, also NEtwork ReqUesTs need tO be able TO siGnAL THaT a favorite needs to bE iNVAlIdated if The serVEr SaYS so.
This iNvAliDatiON Part hAppeNS wHen the seRver reSPoNdS with a 404 eRrOr, indiCaTinG thAt the FAvorIte objEct must bE remoVEd from the user's FAvorites. The neTWoRK FeTCh fuNctIon throws an ErroR, WhicH triGGeRs tHE FavoRitescoNTrOLler to remove the objeCt And theN send A notification To interestED PArties thAt thEY nEEd to refresh.
The ProblEm
When usinG A unit tesT to chEck the quAlity of thE 404 IMplementAtiOn, aLl mEthODS aRe triggered as INTendEd – The erroR is Thrown aNd cAugHt, tHe FAvOritesConTroller dElEtEs ThE obJect aND sends thE nOtiFiCatIon. In SOme insTanceS thoUgH, tHE deLeted faVOrITE is sTiLl TherE – buT iT depeNds oN FroM where tHe query is DonE!
if I qUeRy Inside tHe singleton thE dEletion wenT Ok, buT if I quERY from a clAss that makes use of the sinGLeton, thE deLetioN didN't happen.
DEsiGn detaIls

tHe FavoRitesCOntroLlEr pROPerty FAVoRitEs Uses an ivar WITh aLl accEsSes @sYnchronIzed(), and the value of tHE ivAr is backed by a nSUSerDEFAuLts PRoPErtY.
A FAvoRITe object is an NSDIctionary wItH TwO keys: id and NAme.

otHer info

one weirD thinG Which I fAil to undeRstand why It HappENS: in Some deletiOn attempTs, the name VAlue fOR tHe favOriTe objeCt GetS set tO "" but thE Id kEy retAins itS vAlue.

I'vE writTeN unit tesTs that add an invalid favorIte and CheckS thAt it gets rEmoVEd oN first serVer qUery. This teSt pAssEs wheN stARting With EMpTy sET of faVoriTEs, but failS WhEn tHERe Is an instancE OF'SemI-deleTed' OBject aS aboVe (that retains its
 generated around Cocoapod s it would  be s ill y f or  App le t o ignore it.
I t'salso worth noting that  usin go ne d o es  notlock yo u  o u t  of  u si ngth e  o ther.  It  mightbe a heada che  o r it might b e  w hat you ne ed,  perhaps usi ngCocoap od s f o r tin y o ne cl ass li b raries  or libra ri e s with complex d ep enda ncies and submodu l es for librarieswith t ha t  y o u  wi llbe interac ti ng wi t h often . 
Q : 

S i ngleton prope rty returns dif ferent  v alu e s depe nding  o n  in vocation

B ackg round
Inmy app ,  I have class c alledFav ori tesC o nt ro lle rt hat ma nag e s o bjects t ha tthe u ser' s m a rked  as  fav orite s, and this f avo rite sta tus i s the n us ed  thro ughout  theap p. The Favorite sCon troller i s d es ign ed  as a single ton  cl ass asthere a r e a  n u m b er  of UI elements th ro u g ho ut the a pp tha t  n ee d s to kno wthe  'fa v o ritestat u s'  for obj ects i n  d if ferentpl aces,al sonet workr eque sts ne ed to be  able to signal that a favorite ne e ds t ob e in val idated if t he s e rver  say s  s o.T his i nvali da t io n  part happens whenth e serv er re sponds with a  404 error , i ndicatin g th a tt he favorite ob jectmust be re m oved fro m the  user'sfavorites . The netw ork  fe tch  fu n c ti on throws ane r ror,  w hich tr igg ers the  Fa vor ite sCo nt roller to  removeth eob je ctand t h en sendanot if ica tiont o inte reste d pa rt ie s  th at they ne e d  tore fr esh. 
Th eprobl em
W h enusing a  unit tes t t o  che ck  t he qual ity of the 40 4implementa ti on,  all m e t hods are  triggered as intended–  the er ror  is t hrow n and cau ght , theFav o ritesC ontrol ler d el ete s the o b j ec t a nd  sends the n oti ficat io n. I n someinstances though,t hedeleted favor ite  iss t il l t h er e  –bu t  it d epends on fromwhere thequ e ry  is done!I f I  q uery in side th e sin g leton t he deleti on went O K,  but i f I  query fro m a clas s that ma k es us e  o f the  si ngleto n,  th e del etiond idn 't ha ppen.De sign d etail s
The Fav oritesController proper ty fav orite s u ses an iv arw ith  all acce sses  @synchron ize d() , and  th e  valu e of th e i v ar is  bac k ed by a N S Us erD e f au lts propert y . A f avori teo bjectis a n NSDictionary wi t h two keys: id  and n ame .
O ther  i nfo

One weird  th in g which Ifa il to under stand wh yi t hap pens:in som e delet i o na ttempt s, t hename valu e f or the fav or it e  objec t ge ts  set t o "" b u t th e id key retains i ts va l u e.

I ' vewritt en  unit t e ststhat add a n invalid f avorit e an d che cks tha tit get s r em oved on fi r st server  quer y. This  t estpas ses wh en s t a rting  wit hemp ty set of f av o ri te s , b ut f ailswh en t here is a n  instanc e o f 'semi-d el ete d '  objec t  a s above (tha t r etain s its
 generated_around Cocoapods_it would be silly_for Apple_to_ignore it.

It's_also_worth noting that_using one does_not lock you out_of using the_other._It might be a headache or it might be what you need, perhaps using_Cocoapods_for tiny_one_class_libraries or libraries with complex_dependancies and submodules for libraries_with that_you will be interacting with often.

 Q:

Singleton property_returns_different values depending_on invocation

Background
In my app, I have class called FavoritesController_that manages objects that the user's_marked as favorites,_and_this_favorite status is then_used throughout the app. The FavoritesController_is designed as a singleton class_as there are a number of UI_elements throughout the app that needs_to know the 'favorite status'_for objects_in different places, also network_requests need to_be able_to signal that_a favorite needs to be invalidated_if the server_says so.
This invalidation part happens when_the_server responds with_a_404_error, indicating_that the favorite_object_must be_removed_from the user's favorites. The network_fetch_function throws an error, which triggers the_FavoritesController to remove the_object_and then send a_notification to interested parties that_they need to refresh.
The problem
When using_a unit_test to_check the quality of the 404 implementation, all methods are triggered_as intended – the error is_thrown and caught, the_FavoritesController deletes_the_object and sends_the_notification. In_some instances though, the deleted favorite is_still there_– but it depends on from_where the query is_done!
If_I query inside the singleton the_deletion went OK, but if I_query from a class that_makes_use_of the singleton, the deletion_didn't happen.
Design details

The FavoritesController property favorites_uses an ivar_with all accesses @synchronized(), and the value_of_the ivar is backed by a_NSUserDefaults_property.
A favorite object is an NSDictionary_with_two_keys: id and name.

Other info

One_weird thing which I fail to_understand why it happens: in some deletion attempts, the_name value for_the favorite object gets set_to_""_but the id key retains its value.

I've written unit tests_that add_an invalid favorite_and checks that it gets removed on first server query._This test passes when starting with empty_set of favorites, but fails when there is an instance of'semi-deleted'_object as above (that retains its