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How to use clock() in C++
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@Th.Thielemann both clock() and clock_t are from the C Standard Library's header of time.h, and therefore do not need the use of std namespace prefixes after the inclusion of their libraries. <ctime> wraps that value and function with the std name...
Android Crop Center of Bitmap
I have bitmaps which are squares or rectangles. I take the shortest side and do something like this:
9 Answers
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How exactly does the callstack work?
I'm trying to get a deeper understanding of how the low level operations of programming languages work and especially how they interact with the OS/CPU. I've probably read every answer in every stack/heap related thread here on Stack Overflow, and they are all brilliant. But there is still one thin...
Proper way to initialize a C# dictionary with values?
...y();
}
}
Can you try to reproduce it in a simple Console application and go from there? It seems likely that you're targeting .NET 2.0 (which doesn't support it) or client profile framework, rather than a version of .NET that supports initialization syntax.
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Android Spinner: Get the selected item change event
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Some of the previous answers are not correct. They work for other widgets and views, but the documentation for the Spinner widget clearly states:
A spinner does not support item click
events. Calling this method will raise
an exception.
Better use OnItemSelectedListener() instead:
spinn...
Why are elementwise additions much faster in separate loops than in a combined loop?
Suppose a1 , b1 , c1 , and d1 point to heap memory and my numerical code has the following core loop.
10 Answers
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libpng warning: iCCP: known incorrect sRGB profile
...ou can do that with any of a variety of PNG editors such as ImageMagick's
convert in.png out.png
To remove the invalid iCCP chunk from all of the PNG files in a folder (directory), you can use mogrify from ImageMagick:
mogrify *.png
This requires that your ImageMagick was built with libpng16. ...
SQL Server IN vs. EXISTS Performance
...an overall large result set).
I believe the optimizer is smart enough to convert between "in" vs "exists" when there is a significant cost difference due to (1) and (2), otherwise it may just be used as a hint (e.g. exists to encourage use of an a seekable index on the right side).
Both forms c...
CListCtrl 行高设置，自定义行高 - C/C++ - 清泛网 - 专注C/C++及内核技术
...derCtrl)
//{{AFX_MSG_MAP(CMyListCtrl)
// NOTE - the ClassWizard will add and remove mapping macros here.
ON_WM_MEASUREITEM_REFLECT()
ON_WM_MEASUREITEM()
ON_WM_DRAWITEM()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
CMyListCtrl::CMyListCtrl(void)
{
}
CMyListCtrl::~CMyListCtrl(void)
{...
Items in JSON object are out of order using “json.dumps”?
I'm using json.dumps to convert into json like
6 Answers
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