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Cocoa Core Data efficient way to count entities
... to fetch the count of the objects.
static func fetchCountFor(entityName: String, predicate: NSPredicate, onMoc moc: NSManagedObjectContext) -> Int {
var count: Int = 0
moc.performAndWait {
let fetchRequest: NSFetchRequest<NSFetchRequestResult> = NSFetchRequest(entityNam...
Converting milliseconds to a date (jQuery/JavaScript)
... = new Date().getTime();
var date = new Date(time);
alert(date.toString()); // Wed Jan 12 2011 12:42:46 GMT-0800 (PST)
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Pros and Cons of Interface constants [closed]
...s wouldn't include any constants or conditionals or magic-numbers or magic-strings or hard-coded anything. However, that adds additional time to the development, as you must consider the uses. My view is that most times it's absolutely worth taking the additional time to build a great solid design...
NSPredicate: filtering objects by day of NSDate property
...rmatter.dateFormat = "yyyy-MM-dd"
let date = dateFormatter.dateFromString(predicate)
let calendar = NSCalendar(calendarIdentifier: NSGregorianCalendar)
let components = calendar!.components(
NSCalendarUnit.CalendarUnitYear |
NSCalendarUnit.Calendar...
How can you run a command in bash over until success
... $command isn't a great placeholder either -- see BashFAQ #50 on why using strings to store commands is innately unreliable. Still, this is better than it was; downvote retracted.
– Charles Duffy
Feb 22 at 13:18
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Rename a dictionary key
...practical because dict keys are usually immutable objects such as numbers, strings or tuples. Instead of trying to modify the key, reassigning the value to a new key and removing the old key is how you can achieve the "rename" in python.
...
jQuery Validate Required Select
...the most simple solution
just set the value of the first option to empty string value=""
<option value="">Choose...</option>
and jquery validation required rule will work
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How do I run multiple background commands in bash in a single line?
...So alternatively you can chain the commands in a single line then pass the string to the bash command to spawn a new process which will handle the execution.
bash -c "command1 ; command2" &
This is especially useful in a bash script when you need to run multiple commands in background.
This tw...
Searching subversion history (full text)
...
strings myDump.txt | grep "turtle fwd 10"
– jedierikb
Jul 14 '12 at 2:31
2
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How can I get the current user directory?
...whether this is Vista/Win7 or XP and without using environment variables:
string path = Directory.GetParent(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData)).FullName;
if ( Environment.OSVersion.Version.Major >= 6 ) {
path = Directory.GetParent(path).ToString();
}
Thoug...