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64 bit OS下int占几个字节? - C/C++ - 清泛网 - 专注C/C++及内核技术
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__int64才是8位的。
另外,指针是受编译器/OS影响的,32 bit编译器下int指针占4位,64 bit下int指针占8位。
写个小demo稍微验证下即可,结论:无论32/64位编译器、32/64位OS,结果都是4。
只与编译器位数有关,与OS位数无关...
mfc 按钮变成了非xp风格、界面变成windows经典样式? - C++ UI - 清泛IT社...
... _M_IX86
#pragma comment(linker,"/manifestdependency:\"type='win32' name='Microsoft.Windows.Common-Controls' version='6.0.0.0' processorArchitecture='x86' publicKeyToken='6595b64144ccf1df' language='*'\"")
#elif defined _M_IA64
#pragma comment(linker,"/manifestdependency:...
C# - What does the Assert() method do? Is it still useful?
I am debugging with breakpoints and I realize the assert call? I thought it was only for unit tests. What does it do more than breakpoint? Since I can breakpoint, why should I use Assert?
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hidden symbol ... is referenced by DSO 剖析 - C/C++ - 清泛网 - 专注C/C++及内核技术
...用如下代码即可兼容Win/Linux平台的函数导出:
#ifdef WIN32
#ifdef XXX_EXPORTS
#define XXX_API __declspace(dllexport)
#else
#define XXX_API __declspace(dllimport)
#endif
#define XXX_LOCAL
#else
#ifdef XXX_EXPORTS
#define XXX_API __attribute__ ((visibility("defaul...
In what cases do I use malloc and/or new?
I see in C++ there are multiple ways to allocate and free data and I understand that when you call malloc you should call free and when you use the new operator you should pair with delete and it is a mistake to mix the two (e.g. Calling free() on something that was created with the new ...
How to slice an array in Bash
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There is also a convenient shortcut to get all elements of the array starting with specified index. For example "${A[@]:1}" would be the "tail" of the array, that is the array without its first element.
version=4.7.1
A=( ${version//\./ } )
echo "${A[@]}" # 4 7 1
B...
Swapping two variable value without using third variable
...ation, when one is set to 0, both are set to 0.
When both *x and *y are 0, all other xor operations on *x and *y will equal 0 (as they are the same), which means that the function will set both *x and *y set to 0.
If they have the same values but not the same memory location, everything works as ex...
Updating the list view when the adapter data changes
...tView.setAdapter(adapter);
and after updating the value of a list item, call:
adapter.notifyDataSetChanged();
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How to make a SPA SEO crawlable?
...-state enabled; I also use Breezejs for client-server data interaction, all of which I strongly recommend, but I'll try to give a general enough explanation that will also help people using other platforms.
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WebService Client Generation Error with JDK8
.../jre/lib and then write this line in it:
javax.xml.accessExternalSchema = all
That's all. Enjoy JDK 8.
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