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C++/COM VARIANT实现二维数组 - C/C++ - 清泛网 - 专注C/C++及内核技术
...使用SAFEARRAR实现二维数组的源代码如下：
VARTYPE vt = VT_I4; /*数组元素的类型，long*/
SAFEARRAYBOUND sab[2]; /*用于定义数组的维数和下标的起始值*/
sab[0].cElements = 2;
sab[0].lLbound = 0;
sab[1].cElements = 2;
sab[1].lLbound...
MFC 获取当前时间的几种方法总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...
CString str;
str=time.Format("%H:%M %Y-%m-%d");
AfxMessageBox(str);
4.time_t（转换成秒）
SYSTEMTIME curTime;
GetLocalTime(&curTime);
struct tm tmTime;
tmTime.tm_year = curTime.wYear - 1900;
tmTime.tm_month = curTime.wMonth;
tmTime.tm_day = curTime.wDay;
tmTime.tm_hour = curTi...
What are bitwise shift (bit-shift) operators and how do they work?
...ular shifts. Shifting this value to the left by one position (3,758,096,384 << 1):
11100000 00000000 00000000 00000000
results in 3,221,225,472:
11000000 00000000 00000000 00000000
The digit that gets shifted "off the end" is lost. It does not wrap around.
Logical right shift (>>>...
C++: what regex library should I use? [closed]
...at compile time).
Update: If you're using a C++11 compliant compiler (gcc 4.8 is NOT!), use std::regex unless you have good reason to use something else.
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Are C# events synchronous?
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answered Aug 18 '11 at 11:14
Daniel HilgarthDaniel Hilgarth
156k3535 gold badges285285 silver badges397397 bronze badges
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CoInitialize浅析一 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...证我们的想法。
我们先来看看CoInitialize的汇编
769B2A24 mov edi, edi
769B2A26 push ebp
769B2A27 mov ebp, esp
769B2A29 push 2 ; dwCoInit
769B2A2B push [ebp+8] ; pvRese...
Concatenate two slices in Go
I'm trying to combine the slice [1, 2] and the slice [3, 4] . How can I do this in Go?
7 Answers
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What does “dereferencing” a pointer mean?
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744
Reviewing the basic terminology
It's usually good enough - unless you're programming assembly ...
How do I use arrays in C++?
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answered Jan 26 '11 at 22:14
fredoverflowfredoverflow
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'printf' vs. 'cout' in C++
... instead of just printing them. For example, printing of something like 0x0424 is just crazy. This is caused by std::cout mixing state and actual values. I never saw a language where something like std::setfill would be a type (other than C++, of course). printf clearly separates arguments and actua...