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SQL query to group by day
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actually this depends on what DBMS you are using but in regular SQL convert(varchar,DateColumn,101) will change the DATETIME format to date (one day)
so:
SELECT
sum(amount)
FROM
sales
GROUP BY
convert(varchar,created,101)
the magix number 101 is what date format it is con...
How do I pass an object from one activity to another on Android? [duplicate]
...library, you can directly parse an object into a JSON formatted String and convert it back to the object format after usage. For example,
MyClass src = new MyClass();
Gson gS = new Gson();
String target = gS.toJson(src); // Converts the object to a JSON String
Now you can pass this String across ...
What is “lifting” in Scala?
...e, suppose you have a function which returns an IO[Stream[A]]. This can be converted to the monad transformer StreamT[IO, A]. Now you may wish to "lift" some other value an IO[B] perhaps to that it is also a StreamT. You could either write this:
StreamT.fromStream(iob map (b => Stream(b)))
Or ...
Are the shift operators () arithmetic or logical in C?
...clared as short, the int result of the shift operation would be implicitly converted to short; a narrowing conversion, which may lead to implementation-defined behaviour if the value is not representable in the destination type.
Left Shift
The result of E1 << E2 is E1 left-shifted E2 bit posi...
how to convert milliseconds to date format in android?
I have milliseconds.
I need it to be converted to date format of
15 Answers
15
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How to serialize SqlAlchemy result to JSON?
...turn fields
return json.JSONEncoder.default(self, obj)
and then convert to JSON using:
c = YourAlchemyClass()
print json.dumps(c, cls=AlchemyEncoder)
It will ignore fields that are not encodable (set them to 'None').
It doesn't auto-expand relations (since this could lead to self-refe...
[精华] VC中BSTR、Char和CString类型的转换 - C/C++ - 清泛网 - 专注C/C++及内核技术
...用其它的CString成员函数
3、BSTR转换成char*
方法一，使用ConvertBSTRToString。例如：
#include #pragma comment(lib, "comsupp.lib")
int _tmain(int argc, _TCHAR* argv[])
{
BSTR bstrText = ::SysAllocString(L"Test");
char* lpszText2 = _com_util::ConvertBSTRToString(bs...
How to decide font color in white or black depending on background color?
...rked like a charm for me. Thank you very much! Did it in php though simply converting the syntax and functions.
– CezarBastos
Mar 23 '18 at 17:24
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Unicode character in PHP string
...cho json_decode('"'.$unicodeChar.'"');
Another option would be to use mb_convert_encoding()
echo mb_convert_encoding('&#x1000;', 'UTF-8', 'HTML-ENTITIES');
or make use of the direct mapping between UTF-16BE (big endian) and the Unicode codepoint:
echo mb_convert_encoding("\x10\x00", 'UTF-8...
Simple way to convert datarow array to datatable
I want to convert a DataRow array into DataTable ... What is the simplest way to do this?
14 Answers
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