小编Kri*_*nan的帖子

我们如何在基于拆分视图的iPAd App的详细视图中以编程方式创建导航控制器？

我尝试了此链接中提供的步骤,但无法使用XIB中的导航控制器替换Detail视图控制器.

在Objective C中的init和dealloc方法中调用Accessor方法是不安全的？

我是Objective CI的新手,正在尝试一些示例程序.我无法理解自我和超级方法如何在目标C中工作.在下面的pgm中,CashTransaction.m [super trackSpending:amount]被调用并且在CreditCardTransaction.m中[self] trackspending:amount]被调用.我找不到self和super.super之间的区别用于调用基类重写方法.self用于调用子类重写方法.这就是我的理解.请纠正我,如果我错了.谢谢你.

的main.m

#import <Foundation/Foundation.h>
#import "BudgetObject.h"
#import "Transaction.h"
#import "CashTransaction.h"
#import "CreditCardTransaction.h"

int main (int argc, const char * argv[]) {

        //!---Creating An Object And Allocating It With Values---
        Budget* budget = [Budget new];
        [budget createBudget:1000.00 withExchangeRate:1.2500];

        //!---Declaring And Adding Elements To An Array---
        NSMutableArray* transactions = [[NSMutableArray alloc] initWithCapacity:10];
        Transaction* aTransaction; 
        aTransaction = [Transaction new];
        [transactions addObject:aTransaction];

        //!---Calculating The No Of Elements In An Array---
        int k;
        k=[transactions count];
        NSLog(@"The count value is:%d",k);

        //!---Selecting According …

我用这个代码.

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    // Override point for customization after application launch.

    view = [[UIView alloc] init];

    [_window addSubview:view];

    [view release];

    NSLog(@"count - %d", [view retainCount]);

    [self.window makeKeyAndVisible];

    return YES;

}


- (IBAction)click{

    NSLog(@"count - %d", [view retainCount]); 

}

当我点击uibutton时 - 我的视图保留计数= 2.为什么会发生这种情况？

是否需要单独定义C++中的类或结构的常量静态成员变量？

它是否正确？

struct test
{
    const static int x;
};

int test::x;