ariok

// This assumes we have an NSManagedObject with the NSDate* date property
- (void)setDate:(NSDate *)date{
    [self willChangeValueForKey:@"date"];
    [self setPrimitiveValue:date forKey:@"date"];
    [self didChangeValueForKey:@"date"];
    
    //If needed
    //[self updateOtherData];
}

ariok

My Gist Index

This is a collection of snippets that I use in my everyday code sessions. (Its content is updated thanks to Kilianc's Indexer https://github.com/kilianc/yari-gists-indexer)

Links

• Force the translation to a defined language. (I use this function to force the fallback language to Italian. I didn't find a way to make NSLocalizedString work with italian as fallback. your comments/suggestions are welcome :) )
• [Localization]ForceFallbackLanguage.m

ariok

+ (AnythingManager*)sharedAnythingManager{
    
    static AnythingManager *anythingManager;
    static dispatch_once_t token;
    
    dispatch_once(&token, ^{
        anythingManager = [[AnythingManager alloc]init];
    });
    
    return anythingManager;

ariok

+ (NSDate*)dateAddingMonths:(NSInteger)months{
    NSDateComponents* dateComponents = [[NSDateComponents alloc]init];
    [dateComponents setMonth:months];
    NSCalendar* calendar = [NSCalendar currentCalendar];
    NSDate* newDate = [calendar dateByAddingComponents:dateComponents toDate:self options:0]; //NSDate category
    
    return newDate;
}

ariok

Entry *entry = [NSEntityDescription insertNewObjectForEntityForName:@"Entry" inManagedObjectContext:self.managedObjectContext];

entry.amount = [NSNumber numberWithFloat:[self.UI_amountTextField.text floatValue]];

[self.managedObjectContext save:&error];

ariok

- (NSArray*)monthsNames{
    
    if (!_monthsNames) {
        NSDateFormatter * df = [[NSDateFormatter alloc] init];
        [df setLocale:[[NSLocale alloc] initWithLocaleIdentifier:[[NSLocale preferredLanguages] objectAtIndex:0]]];
        _monthsNames = [df monthSymbols];
    }
    return _monthsNames;
}

ariok

- (Entry*)entryForDate:(NSDate *)date inContext:(NSManagedObjectContext*)context{
    
    NSFetchRequest *request = [[NSFetchRequest alloc]initWithEntityName:@"Entry"];
    
    NSPredicate *predicate = [NSPredicate predicateWithFormat:@"since >= %@",date];
    request.predicate = predicate;
    
    NSSortDescriptor *sort = [NSSortDescriptor sortDescriptorWithKey:@"since" ascending:YES];
    request.sortDescriptors = @[sort];
    

ariok

- (UIView *)loadWithNib {
    NSArray *aNib = [[NSBundle mainBundle]loadNibNamed:NSStringFromClass([self class]) owner:self options:nil];
    UIView *view = [aNib objectAtIndex:0];

    return view;
}

ariok

// Return the month name
+ (NSString*)monthName:(NSInteger)month{
    
    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
    formatter.locale = [NSLocale currentLocale];
    
    NSString *monthName = [[formatter monthSymbols] objectAtIndex:(month - 1)];
    
    return monthName;
}

ariok

// Return integer representation of the required unit for the given date
// Note: It assumes that the current calendar is set to Gregorian
+ (NSInteger)unit:(NSCalendarUnit)unit forDate:(NSDate*)date{
    
    // Get the calendar
    NSCalendar *calendar = [[NSCalendar alloc]initWithCalendarIdentifier:NSGregorianCalendar];
    [calendar setTimeZone:[NSTimeZone defaultTimeZone]];
    
    // Get the component
    NSDateComponents *componets = [calendar components:unit fromDate:date];