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[精华]VC++对话框程序打印及打印预览的实现 - C/C++ - 清泛网 - 专注C/C++及内核技术
...view)
CView::OnFilePrint 和CView::OnFilePrintPreview函数都进行打印操作，但View::OnFilePrint将实际发送到打印机，而CView::OnFilePrintPreview则将输出发送到程序窗口上方显示的预览窗口显示一个或两个打印页面的复制外观。利用上面加入的缺省...
为什么说自媒体到了最危险的时期？ - 资讯 - 清泛网 - 专注C/C++及内核技术
...表等，都是个人生产内容和品牌运营。只有极少数是团队操作，比如专注于智能硬件的国仁的智东西团队。个人生产的好处就是可以保持作品一贯的调性，但是一个人坚持出东西是一件很困难的事情，罗辑思维的罗振宇每天6点...
Evaluating a mathematical expression in a string
...ily in other places.
'''
class NumericStringParser(object):
'''
Most of this code comes from the fourFn.py pyparsing example
'''
def pushFirst(self, strg, loc, toks):
self.exprStack.append(toks[0])
def pushUMinus(self, strg, loc, toks):
if toks and toks[0] ==...
MPICH vs OpenMPI
...
Purpose
First, it is important to recognize how MPICH and Open-MPI are different, i.e. that they are designed to meet different needs. MPICH is supposed to be high-quality reference implementation of the latest MPI standard and...
Why does changing 0.1f to 0 slow down performance by 10x?
... (or subnormal) numbers are kind of a hack to get some extra values very close to zero out of the floating point representation. Operations on denormalized floating-point can be tens to hundreds of times slower than on normalized floating-point. This is because many processors can't handle them dire...
Android: install .apk programmatically [duplicate]
... outputFile.delete();
}
FileOutputStream fos = new FileOutputStream(outputFile);
InputStream is = c.getInputStream();
byte[] buffer = new byte[1024];
int len1 = 0;
while ((len1 = is.read(buffer)) != -1) {
...
Why em instead of px?
...tter choice than the other (or both wouldn't have been given their own purpose in the spec). It may even be worth noting that StackOverflow makes extensive use of px units. It is not the poor choice Spoike was told it was.
Definition of units
px is an absolute unit of measurement (like in, pt, ...
What is the difference between Google App Engine and Google Compute Engine?
...wn virtual machine instances. It gives you more flexibility and generally costs much less than App Engine. The drawback is that you have to manage your app and virtual machines yourself.
Read more about Compute Engine
You can mix both App Engine and Compute Engine, if necessary. They both work wel...
使用CSplitterWnd实现拆分窗口（多视图显示） - C/C++ - 清泛网 - 专注C/C++及内核技术
...，
除非从 CsplitterWnd派生一个新类并修改拆分窗口的默认操作性能，否则拆分窗口中的所有视图使用的都是相同的视图类。
静态拆分窗口是用CsplitterWnd::CreateStatic而不是CsplitterWnd::Create创建，并且由于MFC不会自动创建静态拆分窗...
30岁之后，程序员该向什么方向发展？ - 杂谈 - 清泛网 - 专注C/C++及内核技术
...例，因为我是30岁才开始学编程的，首先写了个社区网络系统。大概就这样在家里折腾了一年，然后加入了Teambition，在Teambition写前端，到人多了，前端团队成熟之后又开始写后端，带领后端团队搭建后端系统。
我为什么要做后...