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In Scala, what exactly does 'val a: A = _' (underscore) mean?
....0d if T is Double,
false if T is Boolean,
() if T is Unit,
null for all other types T.
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What to do Regular expression pattern doesn't match anywhere in string?
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Contrary to all the answers here, for what you're trying to do regex is a perfectly valid solution. This is because you are NOT trying to match balanced tags-- THAT would be impossible with regex! But you are only matching what's in one ...
How do I translate an ISO 8601 datetime string into a Python datetime object? [duplicate]
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I prefer using the dateutil library for timezone handling and generally solid date parsing. If you were to get an ISO 8601 string like: 2010-05-08T23:41:54.000Z you'd have a fun time parsing that with strptime, especially if you didn't know up front whether or not the timezone was included. ...
Forward an invocation of a variadic function in C
... - is there a solution how to fix it? (MSVC prints: too few arguments for call)
– mvorisek
Jul 20 at 17:28
@mvorisek: ...
Getting a list of all subdirectories in the current directory
Is there a way to return a list of all the subdirectories in the current directory in Python?
27 Answers
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Interpret XMP-Metadata in ALAssetRepresentation
...epresentation];
// Create a buffer to hold the data for the asset's image
uint8_t *buffer = (Byte*)malloc(representation.size); // Copy the data from the asset into the buffer
NSUInteger length = [representation getBytes:buffer fromOffset: 0.0 length:representation.size error:nil];
if (length==0)...
获取控件的值的几种方法总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...t nIDC, int& value );
void AFXAPI DDX_Text( CDataExchange* pDX, int nIDC, UINT& value );
void AFXAPI DDX_Text( CDataExchange* pDX, int nIDC, long& value );
void AFXAPI DDX_Text( CDataExchange* pDX, int nIDC, DWORD& value );
void AFXAPI DDX_Text( CDataExchange* pDX, int nIDC, CString& value );
v...
CDC:DrawText 多行显示文本（文本自动换行） - C/C++ - 清泛网 - 专注C/C++及内核技术
... // text length
LPRECT lpRect, // formatting dimensions
UINT uFormat // text-drawing options
);
参数：
hdc：设备环境句柄。
lpString：指向将被写入的字符串的指针，如果参数nCount是C1，则字符串必须是以\0结束的。
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ON_COMMAND_EX、ON_COMMAND区别 - C/C++ - 清泛网 - 专注C/C++及内核技术
...应的普通映射宏相比，有两个不同之处：
一是多了一个UINT类型的参数，另外就是有返回值（返回BOOL类型）。
回顾4.4.2章节，范围映射宏ON_COMMAND_RANGE的消息处理函数也有一个这样的参数，该参数在两处的含义是一样的，
即：
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MFC 菜单背景色设置（菜单重绘） - C/C++ - 清泛网 - 专注C/C++及内核技术
...E_MAP()
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int CMainFrm::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
UINT style=0;
if (CFrameWnd::OnCreate(lpCreateStruct) == -1)
return -1;
mMenu.AttatchMenu(LoadMenu(NULL,MAKEINTRESOURCE(IDR_MAINFRAME)));
mMenu.ChangeMenuItem(&mMenu,TRUE);
SetMenu(&mMenu);
...
}
void C...