2014/10/15 下午 10:11:19

iphone Programming Glossary: mathematical

Decimal point in UIKeyboardTypeDecimalPad can't be used in mathematical calculation

http://stackoverflow.com/questions/11487850/decimal-point-in-uikeyboardtypedecimalpad-cant-be-used-in-mathematical-calculat

point in UIKeyboardTypeDecimalPad can't be used in mathematical calculation I am using the keyboard type UIKeyboardTypeDecimalPad for two UITextField objects. When trying to perform an..

Scaling AR pictures based on the distance from the camera

http://stackoverflow.com/questions/11913355/scaling-ar-pictures-based-on-the-distance-from-the-camera

decided to calculate how much larger the iPhone screen is compared to the dimensions of the CCD sensor. So by a simple mathematical operation I get a sensor to screen size ratio. Because the width to height ratio of the sensor and the screen seem to be..

CGAffineTransformInvert: singular matrix in UIImagePickerController with showsCameraControls = NO

http://stackoverflow.com/questions/13708496/cgaffinetransforminvert-singular-matrix-in-uiimagepickercontroller-with-showsca

has to do with matrices and while I'm not sure which matrix in particular is getting rotated it is considered a mathematical violation to perform operations on matrices with a determinant of zero similar to dividing by zero . Such a matrix is not..

NSString to equation

http://stackoverflow.com/questions/1501949/nsstring-to-equation

what you're asking and even allows you to do variable substitutions 3x 42 evaluate with x 7 . It even has support for mathematical functions like sin cos tan their inverses dtor log .... edit a long time later... While GCMathParser is pretty awesome it..

What tool or technology does Apple use to create its documentation?

http://stackoverflow.com/questions/1930755/what-tool-or-technology-does-apple-use-to-create-its-documentation

of Computer Programming fame because when he went to write his books which required very high quality typesetting of mathematical formulas he was dissatisfied with the existing solutions. So he spent a few years and wrote his own. He was at the bleeding..

Math rendering library for iPhone OS

http://stackoverflow.com/questions/3491971/math-rendering-library-for-iphone-os

rendering library for iPhone OS Is there a library to render mathematical equations that can be used in iPhone OS I would be very happy with a library that renders MathML or LaTeX to a format that..

Convert decimal to fraction in Objective-C?

http://stackoverflow.com/questions/5552537/convert-decimal-to-fraction-in-objective-c

objective c xcode formatting share improve this question Objective C uses pure C for basically all primitive mathematical operations. This being said you'll find all necessary information along with C code in the answers of this other question..