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Objective-C Static Class Level variables

I have a class Film, each of which stores a unique ID. In C#, Java etc I can define a static int currentID and each time i set the ID i can increase the currentID and the change occurs at the class level not object level. Can this be done in Objective-C? I've found it very hard to find an answer for...
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Center a DIV horizontally and vertically [duplicate]

...is smaller than the content The div must have a background color and a width and hight. 7 Answers ...
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I have an error: setOnItemClickListener cannot be used with a spinner, what is wrong?

... developer.android.com/guide/topics/ui/controls/… – shkschneider May 12 '15 at 13:32 1 ...
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Convert int to ASCII and back in Python

...or my site, and my current plan (I'm open to suggestions) is to use a node ID to generate the shortened URL. So, in theory, node 26 might be short.com/z , node 1 might be short.com/a , node 52 might be short.com/Z , and node 104 might be short.com/ZZ . When a user goes to that URL, I need to rev...
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Best practices for Storyboard login screen, handling clearing of data upon logout

... In your appDelegate.m inside your didFinishLaunchingWithOptions //authenticatedUser: check from NSUserDefaults User credential if its present then set your navigation flow accordingly if (authenticatedUser) { self.window.rootViewController = [...
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How to save an activity state using save instance state?

I've been working on the Android SDK platform, and it is a little unclear how to save an application's state. So given this minor re-tooling of the 'Hello, Android' example: ...
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How to define two fields “unique” as couple

...= ('field1', 'field2',) And in your case: class Volume(models.Model): id = models.AutoField(primary_key=True) journal_id = models.ForeignKey(Journals, db_column='jid', null=True, verbose_name = "Journal") volume_number = models.CharField('Volume Number', max_length=100) comments = models....
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How can I make my custom objects Parcelable?

...ation. public class Student implements Parcelable{ private String id; private String name; private String grade; // Constructor public Student(String id, String name, String grade){ this.id = id; this.name = name; this.gra...
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How to delete all Annotations on a MKMapView

... to blink on the map, due to removing the pin then adding it back - (void)removeAllPinsButUserLocation1 { id userLocation = [mapView userLocation]; [mapView removeAnnotations:[mapView annotations]]; if ( userLocation != nil ) { [mapView addAnnotation:userLocation]; // will ...
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putting datepicker() on dynamically created elements - JQuery/JQueryUI

... datepicker. If you do, add this to remove the hasDatepicker class AND the id datepicker adds to your input: .... find('input.hasDatepicker').removeClass('hasDatepicker').removeAttr('id'); – yahermann Jan 27 '17 at 5:35 ...