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Is there a command to refresh environment variables from the command prompt in Windows?
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And annoyingly, extra instances of cmd.exe don't count. They all have to be killed before the change is reflected in any new cmd.exe's.
– Mike F
Oct 5 '08 at 8:08
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How to insert a line break in a SQL Server VARCHAR/NVARCHAR string
...nsert-carriage-return-and-new-line-feed-in-code/
You just concatenate the string and insert a CHAR(13) where you want your line break.
Example:
DECLARE @text NVARCHAR(100)
SET @text = 'This is line 1.' + CHAR(13) + 'This is line 2.'
SELECT @text
This prints out the following:
This is line ...
Get first n characters of a string
How can I get the first n characters of a string in PHP? What's the fastest way to trim a string to a specific number of characters, and append '...' if needed?
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What is the maximum length of a table name in Oracle?
...ou have a 12.2 DB with compatible set to 11.2.0, is still limits you to 30 chars.
– rtaft
Nov 15 '18 at 15:13
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LPCSTR, LPCTSTR and LPTSTR
...To answer the first part of your question:
LPCSTR is a pointer to a const string (LP means Long Pointer)
LPCTSTR is a pointer to a const TCHAR string, (TCHAR being either a wide char or char depending on whether UNICODE is defined in your project)
LPTSTR is a pointer to a (non-const) TCHAR string...
What breaking changes are introduced in C++11?
..."abcdef", now "def"
#define _x "there"
"hello"_x // now a user-defined-string-literal. Previously, expanded _x .
New keywords: alignas, alignof, char16_t, char32_t, constexpr, decltype, noexcept, nullptr, static_assert, and thread_local
Certain integer literals larger than can be r...
When is assembly faster than C?
...Editor's note: more likely the FP latency bottleneck is enough to hide the extra cost of loop. Doing two Kahan summations in parallel for the odd/even elements, and adding those at the end, could maybe speed this up by a factor of 2.)
Whoops, I was running a slightly different version of the code ...
How to assign string to bytes array
I want to assign string to bytes array:
9 Answers
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QString to char* conversion
I was trying to convert a QString to char* type by the following methods, but they don't seem to work.
10 Answers
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Calling C++ class methods via a function pointer
...ility with member pointers - Visual C++, at least in the past, needed some extra clues about how to represent member pointer types. I'd use the static function approach for an embedded system - the representation of a pointer is the same as any other function pointer, the costs are obvious, and ther...