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c++ boost::multi_index composite keys efficiency - C/C++ - 清泛网 - 专注C/C++及内核技术
... and thus is slower?
For example, if I was to maintain two containers manually using two different indices and wanted to find items that matched a specific 2-part query I would probably filter the first container for all items matching the 1st part of the query, and then filter the result for items...
CFileDialog用法及参数解释 - C/C++ - 清泛网 - 专注C/C++及内核技术
...ONLY:隐藏只读选项
OFN_OVERWRITEPROMPT:覆盖已有文件前提
OFN_ALLOWMULTISELECT:允许选择多个文件
OFN_CREATEPROMPT:如果输入的文件名不存在,则对话框返回询问用户是否根据次文件名创建文件的消息框
OFN_FILEMUSTEXIST:只能输入已存在的文件...
解决rc中无法设置CComboBox下拉列表框高度的问题 - C/C++ - 清泛网 - 专注C...
...m whose height is to be set; otherwise, nIndex must be 0 and the height of all list items will be set.
If nIndex is –1, the height of the edit-control or static-text portion of the combo box is to be set.
cyItemHeight
Specifies the height, in pixels, of the combo-box component id...
闲扯Nginx的accept_mutex配置 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...际上Nginx作者Igor Sysoev曾经给过相关的解释:
OS may wake all processes waiting on accept() and select(), this is called thundering herd problem. This is a problem if you have a lot of workers as in Apache (hundreds and more), but this insensible if you have just several workers as ...
HTTPKeepAlive,开启还是关闭 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...
其中,各项结果的含义如下:
Active connections: number of all open connections
Server accepts handled requests: nginx accepted 66542336512 connections, handled 66542336512 connections (no one was closed just it was accepted), and handles 67713042963 requests
Reading: nginx reads r...
.reg文件删除注册表项和值 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...能参阅:
http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/reg.mspx?mfr=true
文章引用自:http://support.microsoft.com/kb/310516
reg文件 删除 注册表
win10启动过程中黑屏时间长的解决办法 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...
3.重启电脑。
“EnableUlps” parameter is now set to zero for all AMD cards.
Disabling this parameter should fix Delayed Startup/BSODS on many laptops.
原来整合包就是通过关闭ulps解决开机延迟的问题。ULPS全称Ultra Low Power State,ULPS是休眠状态 ,降低非...
MFC日历控件完全自绘MyCalendar Control - 源码下载 - 清泛网 - 专注C/C++及内核技术
...resting Windows control, I have found much interesting things on calendars all over the Internet. I hope to extend the current control to support other types of calendars.
WinXP,Win7,Win8,Win1057K
Linux上安装dtrace(劝退篇) - 操作系统(内核) - 清泛网 - 专注IT技能提升
...机(在Debian要求了, 但是Fedora下不需要). 接着执行:
$ make all
$ make install
$ make load (need to be root or have sudo access)
至此大功告成, 有关dtrace的使用之后再总结吧. 希望对大家有所帮助.
附上一个手册: dtrace user guide
后记
折腾了半天...
Linux C++ 单元测试与gcov代码覆盖率统计 - C/C++ - 清泛网 - 专注C/C++及内核技术
...cpp.gcov
lcov --rc lcov_branch_coverage=1 -c -d . -o demo_lcov_report
#all
#genhtml --rc genhtml_branch_coverage=1 demo_lcov_report -o out_report
#filter
lcov --rc lcov_branch_coverage=1 -r demo_lcov_report '/usr/include/*' '*lib/*' -o filtered_coverage
genhtml --rc genhtml_branch_coverage=1...
