2014/10/15 下午 10:09:17

iphone Programming Glossary: formatstring

http://stackoverflow.com/questions/14155360/convert-to-float-and-calculate

use NSScanner before Mr. Borrrden suggested me to use it and I found it awesome. See below method NSMutableString formatString NSString formula Let's check if there any wrong . value exm 1 .2 or .7 3 1 0.2 and 0.7 3 are okay but above are incorrect.. call this method before using NSExpression . NSString formula @ 2.222 .4 9999 7 0.7 .13 NSString formattedString self formatString formula NSExpression exp NSExpression expressionWithFormat formattedString NSNumber resultForCustomFormula exp expressionValueWithObject..

Center a large UIView using NSLayoutConstraint

http://stackoverflow.com/questions/19243837/center-a-large-uiview-using-nslayoutconstraint

in english NSArray buttonConstraints @ @ V dynamicView 200 @ dynamicView 260 mapObjectsUsingBlock ^id NSString formatString NSUInteger idx return NSLayoutConstraint constraintsWithVisualFormat formatString options 0 metrics nil views buttonBindingsDictionary.. mapObjectsUsingBlock ^id NSString formatString NSUInteger idx return NSLayoutConstraint constraintsWithVisualFormat formatString options 0 metrics nil views buttonBindingsDictionary V dynamicView 200 means that vertically speaking.. the upper and lower..

CoreData : store images to DB or not?

http://stackoverflow.com/questions/2573072/coredata-store-images-to-db-or-not

NSString secret inFormat FlickrFetcherPhotoFormat format #if TEST_HIGH_NETWORK_LATENCY sleep 1 #endif NSString formatString switch format case FlickrFetcherPhotoFormatSquare formatString @ s break case FlickrFetcherPhotoFormatLarge formatString.. #if TEST_HIGH_NETWORK_LATENCY sleep 1 #endif NSString formatString switch format case FlickrFetcherPhotoFormatSquare formatString @ s break case FlickrFetcherPhotoFormatLarge formatString @ b break NSString photoURLString NSString stringWithFormat @.. switch format case FlickrFetcherPhotoFormatSquare formatString @ s break case FlickrFetcherPhotoFormatLarge formatString @ b break NSString photoURLString NSString stringWithFormat @ http farm @.static.flickr.com @ @_ @_ @.jpg farm server photoID..

What is the best way to deal with the NSDateFormatter locale “feature”?

http://stackoverflow.com/questions/6613110/what-is-the-best-way-to-deal-with-the-nsdateformatter-locale-feature

right after initializing it. @interface NSDateFormatter LocaleAdditions id initWithPOSIXLocaleAndFormat NSString formatString @end @implementation NSDateFormatter LocaleAdditions id initWithPOSIXLocaleAndFormat NSString formatString self super init.. NSString formatString @end @implementation NSDateFormatter LocaleAdditions id initWithPOSIXLocaleAndFormat NSString formatString self super init if self NSLocale locale NSLocale alloc initWithLocaleIdentifier @ en_US_POSIX self setLocale locale locale.. locale NSLocale alloc initWithLocaleIdentifier @ en_US_POSIX self setLocale locale locale release self setFormat formatString return self @end Then you could use NSDateFormatter anywhere in your code with just NSDateFormatter fmt NSDateFormatter..