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【精心整理】【实用】visual C++中最常用的类与API函数 - C/C++ - 清泛网 -...
...heck(int nCheck);
参数：nCheck 指定设置的状态，0为未选择，1为选中，2为不确定
CByteArray类：该类支持动态的字节数组
CByteArray::GetAt 获取指定下标处的数值，可以用运算符[]代替
BYTE GetAt(int nIndex)const;
参数：nIndex 数组下标，...
Static variables in member functions
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169
Since class A is a non-template class and A::foo() is a non-template function. There will be o...
C++ preprocessor __VA_ARGS__ number of arguments
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Change the Right Margin of a View Programmatically?
...= (LinearLayout.LayoutParams)tv.getLayoutParams();
params.setMargins(0, 0, 10, 0); //substitute parameters for left, top, right, bottom
tv.setLayoutParams(params);
I can't test it right now, so my casting may be off by a bit, but the LayoutParams are what need to be modified to change the margin.
N...
how to find host name from IP with out login to the host
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What's the idiomatic syntax for prepending to a short python list?
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The s.insert(0, x) form is the most common.
Whenever you see it though, it may be time to cons...
Relative frequencies / proportions with dplyr
...se(n = n()) %>%
mutate(freq = n / sum(n))
# am gear n freq
# 1 0 3 15 0.7894737
# 2 0 4 4 0.2105263
# 3 1 4 8 0.6153846
# 4 1 5 5 0.3846154
From the dplyr vignette:
When you group by multiple variables, each summary peels off one level of the grouping. That mak...
OAuth: how to test with local URLs?
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Update October 2016: Easiest now: use lvh.me which always points to 127.0.0.1.
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