object.c c++ mixed code and it support the stl

如题。不过不能给它obj－c用template。

 

objeTest.h

#import <Foundation/Foundation.h>

template<class T>
class Base
{
public:
    T data;
public:
    Base(T val=T())
    {
        data =val;
    }
    ~Base(){}
    void SetValue( T val)
    {
        data =val;
    }
    const T GetValue()const
    {
        return data;
    }
    
};

//the template function determine whether the two object are equal.
template<class T>
bool IsCompare(const T *rval, const T *lval)
{
    return [rval isC: lval];
}

@interface ObjTest : NSObject {
 
    Base<int> * basedata;    
}
- (id)initWithValue:(int) val;
- (void)delloc;
-(void)data:(int)val;
-(int)getdata;
-(NSString*)description;

//for the future,the template invoke it.
-(BOOL) isC:(ObjTest*)lval;
@end

 

objTest.mm(note this post file name)

 

#import "ObjTest.h"
#import "Engine.h"

@implementation ObjTest
- (id)initWithValue:(int) val
{
    self = [super init];
    if (self)
    {
       
        basedata = new Base<int>(val);
       
    }
    return self;
    
    
}
- (void)delloc
{
    delete basedata;
    //[super delloc];    
}

-(void)data:(int)val
{
    
    basedata->SetValue(val);
   
}
-(int)getdata
{
    return basedata->GetValue();
}
-(NSString*)description
{
//    NSString *formatstr = [[NSString alloc] initWithFormat:@"value is now:%i",(basedata->GetValue()) ];
//    return [formatstr autorelease];
    
    return [NSString stringWithFormat:@"value is now:%i",(basedata->GetValue()) ];
}

- (BOOL) isC:(ObjTest*) lval
{
    BOOL breturn = NO;
    if ([self getdata] == [lval getdata]) {
        breturn =YES;
    }
    return breturn;
}
@end





int main (int argc, const char * argv[]) {
    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
    
    // insert code here...
    
//    NSMutableArray *array =
//    
//    [NSMutableArray arrayWithObjects:@"Miguel", @"Ben", @"Adam", @"Melissa", nil];
//    
//    
//    
//    NSPredicate *bPredicate = [NSPredicate predicateWithFormat:@"SELF beginswith[c] 'a'"];
//    
//    NSArray *beginWithB = [array filteredArrayUsingPredicate:bPredicate];
//    
 
    //compare the objects using the template function.
    id obj = [[ObjTest alloc] initWithValue:101 ];
    NSLog(@"value is %@",obj);
    
    id obj2 = [[ObjTest alloc] initWithValue:101 ];
    NSLog(@"value is %@",obj2);
    bool bresult = IsCompare<ObjTest>(obj,obj2);
    [obj release];
    [obj2 release];    
      
    
    [pool drain];
    return 0;
}