2014/10/15 下午 10:12:22
iphone Programming Glossary: operatorhttp://stackoverflow.com/questions/12257429/how-do-i-modify-a-gpuimagegaussianselectiveblurfilter-to-operate-over-a-rectangl the center point travels between two thresholds the inner clear circle and the outer fully blurred circle. The mix operator then takes the output from the smoothstep and fades between the blurred and sharp color pixel colors to produce the appropriate..
How to compare if two objects are really the same object? http://stackoverflow.com/questions/1319247/how-to-compare-if-two-objects-are-really-the-same-object object I want to compare if an variable A represents the same object as variable B does. Could I do that with the operator Or what else is this exactly looking at I think I need to check for the memory adress of the object where the variable is.. the variable is pointing to right iphone objective c cocoa cocoa touch uikit share improve this question The operator tests whether the two expressions are the same pointer to the same object. Cocoa calls this relation 𦤹dentical see for example..
How to correctly setup a NSPredicate for a to-many relationship when using Core Data? http://stackoverflow.com/questions/1347776/how-to-correctly-setup-a-nspredicate-for-a-to-many-relationship-when-using-core What is the correct way to implement the predicate in this case May this be a bug related to the ANY aggregate operator when using core data Thank you in advance this is now driving me crazy. iphone core data share improve this question.. to fetch Departments in which at least one of the employees has the first name Matthew for instance you use an ANY operator as shown in the following example NSPredicate predicate NSPredicate predicateWithFormat @ ANY employees.firstName like 'Matthew'.. If you want to find Departments in which all the employees are paid more than a certain amount you use an ALL operator as shown in the following example float salary ... NSPredicate predicate NSPredicate predicateWithFormat @ ALL employees.salary..
Boundry detect paper sheet opencv http://stackoverflow.com/questions/13493035/boundry-detect-paper-sheet-opencv of the actual data and operate on this copy. The OpenCV reference states by using a copy constructor or assignment operator where on the right side it can be a matrix or expression see below. Again as noted in the introduction matrix assignment..
Convert to Float and Calculate http://stackoverflow.com/questions/14155360/convert-to-float-and-calculate to Float and Calculate I have a string with multiple digits and operators @ 5 4 9 10 . How to get the result from it I want to use it within the calculator i am using. I will have to display the.. it I want to use it within the calculator i am using. I will have to display the result dynamically when a digit or operator is pressed. I used arity jar file in android . But i am not able to achieve something like that in iPhone . iphone objective..
What is the right choice between NSDecimal, NSDecimalNumber, CFNumber? http://stackoverflow.com/questions/1704504/what-is-the-right-choice-between-nsdecimal-nsdecimalnumber-cfnumber and complicated to use functions like decimalNumberByAdding With Python it was easy to define __add__ to use operators with objects. Should I get float values from NSDecimalNumber then do the computations and returns the result wrapped in.. needs. Unfortunately you won't be able to avoid the likes of decimalNumberByAdding since Objective C does not support operator overloading like C does. I agree that it makes your code somewhat less elegant. One comment on the code you posted r obj..
Create a folder inside documents folder in iOS apps http://stackoverflow.com/questions/1762836/create-a-folder-inside-documents-folder-in-ios-apps in the documents folder of my iPhone app. Does anybody know how to do that Appreciate your help iphone folder new operator document nsfilemanager share improve this question I do that the following way NSArray paths NSSearchPathForDirectoriesInDomains..
indentationLevelForRowAtIndexPath not indenting custom cell http://stackoverflow.com/questions/2502822/indentationlevelforrowatindexpath-not-indenting-custom-cell indexPath.row indentationLevel return indentationLevel I initially thought that this was not being called but that was operator error err mine and I hadn't defined the symbol DEBUG 1. However it is being called duh me and this is the log output RootViewController..
String comparison in Objective-C [closed] http://stackoverflow.com/questions/2592511/string-comparison-in-objective-c share improve this question Use the isEqualToString method to compare the value of two strings. Using the C operator will simply compare the addresses of the objects. if category isEqualToString @ Some String Do stuff... share improve..
Web site exhibits JavaScript error on iPad / iPhone under 3G but not under WiFi http://stackoverflow.com/questions/3282373/web-site-exhibits-javascript-error-on-ipad-iphone-under-3g-but-not-under-wifi on Mac. This does not reproduce the problem. I am currently suspecting this is a problem being introduced by my mobile operator in the UK O2 which is known to modify some content through a proxy cache such as downgrading image files. If you can confirm.. you can confirm that you don't experience this problem when connecting by 3G on iPad or iPhone through another mobile operator that would be helpful. iphone ipad proxy wifi 3g share improve this question I've investigated this further and discovered.. share improve this question I've investigated this further and discovered that the problem is that the UK mobile operator O2 the original exclusive iPhone operator for Apple modifies web content before sending it to iPhones and iPads. Probably..
http://stackoverflow.com/questions/4176149/multiple-value-enum-in-obj-c constant. I understand how to use it except in one case the case you can pass as a parameter multiple value with the operator. Like in pageControl.autoresizingMask UIViewAutoresizingFlexibleWidth UIViewAutoresizingFlexibleTopMargin The enum is declared.. when passed as a parameter iphone objective c cocoa touch cocoa enums share improve this question is the bitshift operator. So 1 2 tells it to shift the bit two spaces over. Example In binary the number 1 is 0001 1 2 means to shift all the bits.. following value 0011 So they use each bit as a flag so they know you have multiple values set. You can now use the AND operator to figure out if you have a specific value set. 0010 0011 0010 So you could do this to check if you have one of enums set..
How to print Boolean flag in NSLog? http://stackoverflow.com/questions/6358349/how-to-print-boolean-flag-in-nslog share improve this question I do this in my code BOOL flag YES NSLog flag @ Yes @ No is the ternary conditional operator of the form condition result_if_true result_if_false Substitute actual log strings accordingly where appropriate. share..
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