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2014/10/15 ¤U¤È 10:12:14

iphone Programming Glossary: numerical

Why isn't my String comparison working in iOS 6? [duplicate]

http://stackoverflow.com/questions/12762444/why-isnt-my-string-comparison-working-in-ios-6

really worked. Comparing strings doesn't work using the operator since strings NSString objects are pointers doing a numerical comparison only compares their address not their contents. You need to write if someString isEqualToString @ Font do stuff..

Do you know a good and efficient FFT? [closed]

http://stackoverflow.com/questions/1592345/do-you-know-a-good-and-efficient-fft

FFT algorithms that FFTW used for comparison many are free and some may be adequate. I'd probably start with good old numerical recipes which offers an easy power of 2 1D FFT implementation for free and some typing and would be very memory efficient...

Class Constants

http://stackoverflow.com/questions/2377368/class-constants

c classes each of which require a number of constants that are used in switch statements. I had tried defining these numerical constants in the .m file using the #define preprocessor instruction. All these constants begin with 'kCell'. This seems..

How can I convert a NSString representation of a time value into two NSInteger's containing the hour and minute?

http://stackoverflow.com/questions/3432260/how-can-i-convert-a-nsstring-representation-of-a-time-value-into-two-nsintegers

a simple way to extract the hour and minute characters from a NSString representation of a time value and store their numerical values in two NSInteger's Thanks in advance for all your help I'm gonna get back to it... iphone string ipad nsstring ios..

Barcode Generation inside of IOS

http://stackoverflow.com/questions/5759073/barcode-generation-inside-of-ios

Generation inside of IOS I want to take a numerical string and generate a simple barcode that can be read by any scanner. I can already use the camera and read a barcode but..

textField:shouldChangeCharactersInRange:replacementString:

http://stackoverflow.com/questions/7531834/textfieldshouldchangecharactersinrangereplacementstring

range.length return newLength 10 NO YES unreachable So you are just checking the length but not whether the input is numerical. Change this line return newLength 10 NO YES with this one if newLength 10 return NO and it should work. You can also optionally..