There are a lot of specialized subclasses of NSFormatter: CNContactFormatter CNPostalAddressFormatter DRMSFFormatter MKDistanceFormatter NSByteCountFormatter NSDateComponentsFormatter NSDateFormatt...

I read the similar questions here and Write this method in my app let formatter = NumberFormatter() func convertEngNumToPersianNum(num: String)->String{ let number = NSNumber(value: Int(nu...

I am formatting a UITextField such that it becomes comma separated (Decimal style) while typing. So 12345678 becomes 12,345,678 Now when I edit the UITextField, say I want to remove 5, at that t...

I have a string, "$4,102.33" that needs to be converted to double. This will always be US. My only way is a hack to strip out the $ and , and then convert to double. Seems like NSFormatter only let...

Is there any way to get an NSNumberFormatter (or presumably any other NSFormatter) to work in an NSPopover? The NSTextField's value in the popover is bound to an NSViewController's representedObje...

When logging-out a float in Objective-C you can do the following to limit your output to only 2 decimal places: float avgTemp = 66.844322156 NSLog (@"average temp. = %.2f", avgTemp); But how do ...

I have an NSFormatter in Swift, which is attached to an NSTextField. It prevents illegal characters from being entered, but when I try to access the value of the next field it gives a nil value. B...

Based on a previous discussion I had in SO (see Doubts on concurrency with objects that can be used multiple times like formatters), here I'm asking a more theoretical question about objects that d...

Maybe a stupid question to ask but I need some confirmations on it. Usually, when I deal with objects that can be used multiple times within my application I use an approach like the following. C...

How can we round off decimal numbers to 2 digits in iphone ? For example , 5345 --> 53 570 -- > 57 89523 -- > 90 I tried to use nsformatter for this and here is the code i used , NSNumberFo...