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C multi-line macro: do/while(0) vs scope block [duplicate]

I've seen some multi-line C macros that are wrapped inside a do/while(0) loop like: 1 Answer ...
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Remove the image from a imageview Android [duplicate]

... 406 I always use imageView.setImageDrawable(null); ...
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What do numbers using 0x notation mean?

What does a 0x prefix on a number mean? 5 Answers 5 ...
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How to create empty data frame with column names specified in R? [duplicate]

... Just create a data.frame with 0 length variables eg nodata <- data.frame(x= numeric(0), y= integer(0), z = character(0)) str(nodata) ## 'data.frame': 0 obs. of 3 variables: ## $ x: num ## $ y: int ## $ z: Factor w/ 0 levels: or to create...
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c/c++浮点输出时,不显示小数点后没用的0 - C/C++ - 清泛网 - 专注C/C++及内核技术

c/c++浮点输出时,不显示小数点后没用的0用%g格式符就可以了。%g用来输出实数,它根据数值的大小,自动选f格式或e格式(选择输出时占宽度较小的一种),且不输出无意义的0。即%g是 用%g格式符就可以了。%g用来输出实数,...
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CListCtrl 行高设置,自定义行高 - C/C++ - 清泛网 - 专注C/C++及内核技术

...sureItem(LPMEASUREITEMSTRUCT lpMeasureItemStruct) { if (m_nRowHeight>0) { lpMeasureItemStruct->itemHeight = m_nRowHeight; } } void CMyListCtrl::OnMeasureItem(int nIDCtl, LPMEASUREITEMSTRUCT lpMeasureItemStruct) { CListCtrl::OnMeasureItem(nIDCtl, lpMeasureItemStruct...
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MFC Dialog中嵌入View、动态创建View的方法 - C/C++ - 清泛网 - 专注C/C++及内核技术

...oView); if (!((CView*)m_pDemoView)->Create(NULL, NULL, WS_CHILD, CRect(0, 0, 0, 0), this, NULL, NULL)) { AfxMessageBox(_T("Create view failed")); return; } ... //显示FormView m_pDemoView->MoveWindow(rect); m_pDemoView->ShowWindow(SW_SHOW); m_pDemoView->OnInitialUpdate(); //...
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MFC 改变Edit等控件的高度、大小及位置 - C/C++ - 清泛网 - 专注C/C++及内核技术

MFC 改变Edit等控件的高度、大小及位置pWnd->MoveWindow( CRect(0,0,100,100) ); 在窗口左上角显示一个宽100、高100的编辑控件SetWindowPos()函数使用更灵活,多用于只修改...pWnd->MoveWindow( CRect(0,0,100,100) ); //在窗口左上角显示一个宽100、高100...
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Python Charts库(Highcharts API的封装) - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

...charts脚本 Highcharts中文网:http://v1.hcharts.cn/demo/index.php?p=10 Highcharts官网:http://api.highcharts.com/highcharts/title http://nbviewer.jupyter.org/github/arnoutaertgeerts/python-highcharts/blob/master/Tutorial.ipynb#Data-configuration 中文API文档 https://api.hcharts.cn/h...
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CentOS搭建sock5代理服务器(XEN VPS ) - 更多技术 - 清泛网 - 专注C/C++及内核技术

...编译安装ss5(socks5) wget http://www.linuxso.com/uploads/soft/101018/ss5-3.6.1-1.tar.gz tar zxvf ss5-3.6.1-1.tar.gz cd ss5-3.6.1 ./configure make make install #启动ss5服务 /etc/init.d/ss5 start 添加ss5到服务中,并随机启动 chkconfig --add ss5 chkconfig ss5 on ...