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Programmatically find the number of cores on a machine
... = sysinfo.dwNumberOfProcessors;
Linux, Solaris, AIX and Mac OS X >=10.4 (i.e. Tiger onwards)
int numCPU = sysconf(_SC_NPROCESSORS_ONLN);
FreeBSD, MacOS X, NetBSD, OpenBSD, etc.
int mib[4];
int numCPU;
std::size_t len = sizeof(numCPU);
/* set the mib for hw.ncpu */
mib[0] = CTL_HW;
mib[1] =...
.NET console application as Windows service
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JasonMArcher
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answered Oct 14 '11 at 7:33
VladVVladV
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How do I convert an NSString value to NSData?
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1422
NSString* str = @"teststring";
NSData* data = [str dataUsingEncoding:NSUTF8StringEncoding];
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How to get folder path for ClickOnce application
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Erik VullingsErik Vullings
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OnNotify函数 ON_NOTIFY消息总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...SELECT_CHANGE, GRIDCTRL_ID, &CContradictionRuleView::OnNotifyGridChanged)
4.在子窗口中发送WM_NOTIFY消息
if (this->GetParent())
{
NMHDR nmhdr;
nmhdr.hwndFrom= this->m_hWnd;
nmhdr.idFrom = 0;//m_id;
nmhdr.code = WM_GRID_SELECT_CHANGE; // 用户自定义消息
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Context switches much slower in new linux kernels
We are looking to upgrade the OS on our servers from Ubuntu 10.04 LTS to Ubuntu 12.04 LTS. Unfortunately, it seems that the latency to run a thread that has become runnable has significantly increased from the 2.6 kernel to the 3.2 kernel. In fact the latency numbers we are getting are hard to belie...
How do I intercept a method call in C#?
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Jorge CórdobaJorge Córdoba
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How can you find the height of text on an HTML canvas?
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answered Mar 23 '12 at 23:43
Daniel EarwickerDaniel Earwicker
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C++ Tuple vs Struct
...e. Below is the benchmark code and performance results collected using gcc-4.9.2 and clang-4.0.0:
std::vector<StructData> test_struct_data(const size_t N) {
std::vector<StructData> data(N);
std::transform(data.begin(), data.end(), data.begin(), [N](auto item) {
std::rand...
Loop through an array of strings in Bash?
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2488
You can use it like this:
## declare an array variable
declare -a arr=("element1" "element2" ...