Re: Dynamic message typing problem
Re: Dynamic message typing problem
- Subject: Re: Dynamic message typing problem
- From: Julius Guzy <email@hidden>
- Date: Sat, 17 May 2008 00:51:54 +0100
Thanks to all who replied to my pleas for help.
I took Bill and Scott's suggestions to heart and produced the answer
I needed: Dynamic Typing which allows me to avoid circularity etc.
I post the complete solution as an example and to check that I'm not
running close to the wind by using a dummy class definition. The code
gets no compiler warnings.
// AnonTargetClass.h
#import <Cocoa/Cocoa.h>
@interface AnonTargetClass : NSObject {
}
- (void) printFloat:(float)pF;
// AnonTargetClass.m
#import "AnonTargetClass.h"
@implementation AnonTargetClass
- (void) printFloat:(float)pF {
NSLog(@"%7.3f",pF);
}
// DummyClass.h
#import <Cocoa/Cocoa.h>
@interface DummyClass : NSObject {
}
- (void) printFloat:(float)pF;
// DummyClass.m
#import "DummyClass.h"
@implementation DummyClass
- (void) printFloat:(float)pF {
}
// CallingClass.h
#import <Cocoa/Cocoa.h>
#import "DummyClass.h";
@interface CallingClass : NSObject {
}
- (void) callPrintConstFloat:(id)pId;
- (void) callPrint:(id)pId zFloat:(float)pF;
// CallingClass.m
#import "CallingClass.h"
@implementation CallingClass
- (void) callPrintConstFloat:(id)pId {
[pId printFloat:99.99];
}
- (void) callPrint:(id)pId zFloat:(float)pF {
[pId printFloat:pF];
}
// main.m
#import <Cocoa/Cocoa.h>
#import "AnonTargetClass.h"
#import "CallingClass.h"
int main(int argc, char *argv[])
{
AnonTargetClass * atcObj = [[AnonTargetClass alloc]init];
CallingClass * callingObj = [[CallingClass alloc]init];
[callingObj callPrintConstFloat:atcObj];
[atcObj printFloat:88.88];
}
[Session started at 2008-05-17 00:33:01 +0100.]
2008-05-17 00:33:01.988 testDynamicBinding[2436:10b] 99.990
2008-05-17 00:33:01.989 testDynamicBinding[2436:10b] 88.880
Thanks again
Julius
http://juliuspaintings.co.uk
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