How do I get weekday and/or name of month from a NSDate variable?

Question

Alright. The problem we\'re having is that we have NSStrings filled with dates in the format of yyyyMMdd and what we want to do is to get the current weekday and name of mon

Answer 1

- (void) getMonthFromDate:(NSString *) stringDate
{
    NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
    [dateFormat setDateFormat:@"yyyy-MM-dd"];
    NSDate *date = [dateFormat dateFromString:stringDate];
    NSCalendar* calendar = [NSCalendar currentCalendar];
    NSDateComponents* components = [calendar components:NSCalendarUnitYear|NSCalendarUnitMonth|NSCalendarUnitDay fromDate:date]; // Get necessary date components

    NSLog(@"%lu", [components day]);
    NSLog(@"%lu %@",[components day],[[dateFormat monthSymbols] objectAtIndex:[components month]]);

}

Answer 2

As apple says, creating (and let ARC dispose) a formatter is expensive, so:

1) declare in your file:

private var localDateFormatter : DateFormatter?

..
extension Date {

2) use lazy approach:

if localDateFormatter == nil{

        localDateFormatter = DateFormatter()

        let locale = Locale(identifier: "en_US_POSIX")

....}
    let newTime = localDateFormatter!.date(from: self)

if You have alla the stuff in one class, a static / let member would be nice. (we cannot use vars in extensions... :( globals seems bad but no way...)