It's often useful to avoid stepping into some common code like constructors or overloaded operators. Many times when you debug the code you probably step into functions you would like to step over, whether it's constructors, assignment operators or o…
https://msdn.microsoft.com/en-us/library/xz7ttk5s.aspx Optimizing Your Code Visual Studio 2015 The latest version of this topic can be found at Optimizing Your Code. By optimizing an executable, you can achieve a balance between fast execution spee…
问题: 第一个函数中用到了变量a:第二个函数也想使用变量a. 解决方法: 在第一个函数中将变量a定义为全局变量,然后在第二个函数中,也写上global a即可. 示例: def func1(): global a a = 1 print "a in func1 is %d" % (a) def func2(): global a print "a in func2 is %d" % (a) func1() func2() 运行结果: a in func1 is 1…
字节填充 VC++在Debug编译方式下,new的内存用0xcd(助记词为Cleared Data)填充,防止未初始化: delete后,内存用0xdd(Dead Data)填充,防止再次被使用. 这样有利于调试内存错误.之所以选择这样的填充模式,是因为: A 大数,若被当成指针就会越界: B 奇数,指针通常指向偶数地址: C 非0,这样不会和NULL混淆. 在Release编译方式下不会用这些字节填充.…
It is possible to instruct the debugger to break when an exception occurs, before a handler is invoked. That allows you to debug your application immediately after the exception occurs. Navigating the Call Stack should allow you to figure the root ca…
Memory Values If you're using the debug heap, memory is initialized and cleared with special values. Typically MFC automatically adds something like the following to your .cpp files to enable it: #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE s…