2014/10/15 下午 10:13:39

iphone Programming Glossary: scanuptocharactersfromset

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

NO if theScanner scanFloat aFloat formattedString appendString NSString stringWithFormat @ f aFloat if theScanner scanUpToCharactersFromSet NSCharacterSet decimalDigitCharacterSet intoString aString formattedString appendString aString return formattedString..

Replace unicode value in string

http://stackoverflow.com/questions/19564950/replace-unicode-value-in-string

result NSMutableString string while scanner isAtEnd NSString tmp Copy all non control characters verbatim if scanner scanUpToCharactersFromSet controls intoString tmp result appendString tmp if scanner isAtEnd break Escape all control characters if scanner scanCharactersFromSet..

Objective-C: Find numbers in string

http://stackoverflow.com/questions/4663438/objective-c-find-numbers-in-string

NSCharacterSet characterSetWithCharactersInString @ 0123456789 Throw away characters before the first number. scanner scanUpToCharactersFromSet numbers intoString NULL Collect numbers. scanner scanCharactersFromSet numbers intoString numberString Result. int number.. the number you want to extract. The number won't overflow int . Alternatively you could scan direct to the int scanner scanUpToCharactersFromSet numbers intoString NULL int number scanner scanInt number If the # marks the start of the number in the string you could..

How to extract the image source from an rss string

http://stackoverflow.com/questions/6081064/how-to-extract-the-image-source-from-an-rss-string

@ src intoString nil NSCharacterSet charset NSCharacterSet characterSetWithCharactersInString @ ' theScanner scanUpToCharactersFromSet charset intoString nil theScanner scanCharactersFromSet charset intoString nil theScanner scanUpToCharactersFromSet charset.. scanUpToCharactersFromSet charset intoString nil theScanner scanCharactersFromSet charset intoString nil theScanner scanUpToCharactersFromSet charset intoString src src now contains the URL of the img NSLog @ @ src http d.yimg.com a p ap 20110520 capt.53a8af4c675f421c8b7cba014c589d29..

separate the ids and store in two different array

http://stackoverflow.com/questions/6206312/separate-the-ids-and-store-in-two-different-array

@ src intoString nil NSCharacterSet charset NSCharacterSet characterSetWithCharactersInString @ ' theScanner scanUpToCharactersFromSet charset intoString nil theScanner scanCharactersFromSet charset intoString nil theScanner scanUpToCharactersFromSet charset.. scanUpToCharactersFromSet charset intoString nil theScanner scanCharactersFromSet charset intoString nil theScanner scanUpToCharactersFromSet charset intoString src src now contains the URL of the img NSLog @ @ src Source Previous SO answer share improve this answer..

NSDate from stange looking string

http://stackoverflow.com/questions/7038117/nsdate-from-stange-looking-string

NSScanner scannerWithString @ Date Date 1314313200000 0100 Skip everything up to a valid numeric character scanner scanUpToCharactersFromSet NSCharacterSet decimalDigitCharacterSet intoString NULL Parse numeric value into a 64bit variable long long milliseconds..

how do I get a substring in iOS?

http://stackoverflow.com/questions/8330663/how-do-i-get-a-substring-in-ios

You can use an NSScanner or search using an NSRegularExpression. NSScanner sc NSScanner scannerWithString s int num sc scanUpToCharactersFromSet NSCharacterSet decimalDigitCharacterSet intoString nil sc scanInt num Or int num NSError err nil NSRegularExpression r..