Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>Here are methods from Cocoa to help you to get relevant info (not sure if they are all available in coca-touch).</p> <pre><code> NSDate * today = [NSDate date]; NSLog(@"today: %@", today); NSString * str = @"Thu, 21 May 09 19:10:09 -0700"; NSDate * past = [NSDate dateWithNaturalLanguageString:str locale:[[NSUserDefaults standardUserDefaults] dictionaryRepresentation]]; NSLog(@"str: %@", str); NSLog(@"past: %@", past); NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar]; unsigned int unitFlags = NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit | NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit; NSDateComponents *components = [gregorian components:unitFlags fromDate:past toDate:today options:0]; NSLog(@"months: %d", [components month]); NSLog(@"days: %d", [components day]); NSLog(@"hours: %d", [components hour]); NSLog(@"seconds: %d", [components second]); </code></pre> <p>The NSDateComponents object seems to hold the difference in relevant units (as specified). If you specify all units you can then use this method:</p> <pre><code>void dump(NSDateComponents * t) { if ([t year]) NSLog(@"%d years ago", [t year]); else if ([t month]) NSLog(@"%d months ago", [t month]); else if ([t day]) NSLog(@"%d days ago", [t day]); else if ([t minute]) NSLog(@"%d minutes ago", [t minute]); else if ([t second]) NSLog(@"%d seconds ago", [t second]); } </code></pre> <p>If you want to calculate yourself you can have a look at:</p> <pre><code>NSDate timeIntervalSinceDate </code></pre> <p>And then use seconds in the algorithm.</p> <p><strong>Disclaimer</strong>: If this interface is getting deprecated (I haven't checked), Apple's preferred way of doing this via <code>NSDateFormatters</code>, as suggested in comments below, looks pretty neat as well - I'll keep my answer for historical reasons, it may still be useful for some to look at the logic used.</p>
    singulars
    1. This table or related slice is empty.
    1. POiPhone: Convert date string to a relative time stamp
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USstefanB
    1. USstefanB
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. COahh very nifty solution, thank you!
      singulars
      1. PO
      1. USNael El Shawwa
    2. CONote: the old NSCalendarDate/NSDateComponents way is being deprecated on Mac OS X. Apple seems to recommend using NSDateFormatters exclusively now. They make it quite easy to juggle with any components. Also see Gilean's answer.
      singulars
      1. PO
      1. USandreb
    3. CO@andreb `NSCalendarDate` is being deprecated, but `NSDateComponents` is certainly not. The right way to get these components from an `NSDate` is to use `NSCalendar` and `NSDateComponents`, as shown in this answer. `NSDateFormatter`s should be used to convert to/from string representations, not to get individual date components.
      singulars
      1. PO
      1. USNick Forge
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload