problem about imp-Collection of common programming errors

11 years ago
admin
3 minutes

  • Benjamin
    objective-c ios pointers selector imp
    I define a function of pointtypedef void (^ButtonClick)(id sender);and i want to call it when Button click(UIButton addTarget to call ^ButtonClick function) but it is could find the pointer.-(void)addRightButton:(UIImage*)btnImage click:(ButtonClick)click{UIButton *modalViewButton = [UIButton buttonWithType:UIButtonTypeCustom];[modalViewButton addTarget:selfaction:@selector(click) // <==== could not find pointer.Pointer errorsforControlEvents:UIControlEventTouchUpInside];// other code to add

  • Andrew Lauer Barinov
    objective-c selector objective-c-blocks imp
    Supposed I have two objective-c classes, LBFoo and LBBar.In LBFoo I have a method that looks like this:- (void)doSomethingWithFoo:(NSNumber*)anArgument {if(anArgument.intValue > 2)[LBBar doSomethingWithLBBar];else[LBBar doSomethingElseWithLBBar]; }What I would like to do instead is pass an implementation to LBBar that was not declared ahead of time. (As in dynamically override an existing @selector within LBBar)I know that an IMP type exists, is it possible to pass an IMP to a class in order

  • upsidedown
    eclipse plugins eclipse-plugin imp
    I have a plugin for my own programming language for eclipse. The plugin is based on IMP. When running the project via “Run as eclipse application” everything works as expected: I have an eclipse perspective of the language, I can compile/run files associated with my language. I tried getting the plugin into a clean eclipse install: – I’ve created a feature project for my plugin – I’ve created an update site project – I’ve added my feature, the IMP runtime and the LPG runtime to my update site –

  • Alex
    objective-c optimization for-loop selector imp
    According to this article For loops in objective C can be optimized using SEL & IMP. I have been toying with the idea for a bit now, and today I’ve been trying some tests. However what seems to work for one class, does not seem to work for another. Furthermore, I would like to know how exactly the speedup occurs ? By avoiding objC_mesgSent ?Question 1 How is this:Cell *cell; for (NSMutableArray *row in self.data) {for (Data *d in row){cell = [[Cell alloc] initWithRect:tmp_frame];[self addSub

  • David Halter
    python import numpy imp
    I imported a numpy library in two different ways. The first time with from numpy.random import mtrand and the second time after messing with the sys.path.However, the output of these two module imports was totally different:>>> from numpy.random import mtrand >>> dir(mtrand) [‘RandomState’, ‘__builtins__’, ‘__doc__’, ‘__file__’, ‘__name__’, ‘__package__’, ‘__test__’, ‘_rand’, ‘beta’, ‘binomial’, ‘bytes’, ‘chisquare’, ‘dirichlet’, ‘exponential’, ‘f’, ‘gamma’, ‘geometric’, ‘get_s

Web site is in building