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Format date and time in a Windows batch script
...echo secs=%secs%
set year=%date:~-4%
echo year=%year%
:: On WIN2008R2 e.g. I needed to make your 'set month=%date:~3,2%' like below ::otherwise 00 appears for MONTH
set month=%date:~4,2%
if "%month:~0,1%" == " " set month=0%month:~1,1%
echo month=%month%
set day=%date:~0,2%
if "%day:~0,1%" == " ...
Meaning of $? (dollar question mark) in shell scripts
...# echoes 0
false
echo $? # echoes 1
From the manual: (acessible by calling man bash in your shell)
$? Expands to the exit status of the most recently executed foreground pipeline.
By convention an exit status of 0 means success, and non-zero return status means failure. Le...
Java: Why is the Date constructor deprecated, and what do I use instead?
...te describes which constructors are deprecated and how to replace them using a Calendar.
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What is Func, how and when is it used
What is Func<> and what is it used for?
7 Answers
7
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You can't specify target table for update in FROM clause
... SELECT B
FROM myTable
INNER JOIN ...
)
That is, if you're doing an UPDATE/INSERT/DELETE on a table, you can't reference that table in an inner query (you can however reference a field from that outer table...)
The solution is to replace the instance of myTable in the sub-query with (...
Can Json.NET serialize / deserialize to / from a stream?
...ard that Json.NET is faster than DataContractJsonSerializer, and wanted to give it a try...
5 Answers
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How to emulate C array initialization “int arr[] = { e1, e2, e3, … }” behaviour with std::array?
(Note: This question is about not having to specify the number of elements and still allow nested types to be directly initialized.)
This question discusses the uses left for a C array like int arr[20]; . On his answer , @James Kanze shows one of the last strongholds of C arrays, it's unique i...
New line in text area
I tried both but new line is not reflecting while rendering the html file.
How can I do that?
12 Answers
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C++ SFINAE examples?
I want to get into more template meta-programming. I know that SFINAE stands for "substitution failure is not an error." But can someone show me a good use for SFINAE?
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How can I use Async with ForEach?
Is it possible to use Async when using ForEach? Below is the code I am trying:
7 Answers
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