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varbinary to string on SQL Server
...inaryValue, 2) to get unique value - answer from Gunjan Juyal is the right one - it should be marked as solution
– Philipp Munin
Oct 18 '13 at 20:03
13
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How do I rename a local Git branch?
...that the newly created branch is pointing to its own ref and not the older one. If you find the reference to the older branch, you need to unset the upstream using:
git branch --unset-upstream
share
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How to use git merge --squash?
...t be marked as merged! So, you will need just to delete that branch to be done.
– am0wa
Aug 2 '17 at 13:34
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Sorting a vector in descending order
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Actually, the first one is a bad idea. Use either the second one, or this:
struct greater
{
template<class T>
bool operator()(T const &a, T const &b) const { return a > b; }
};
std::sort(numbers.begin(), numbers.end(),...
How do I get a substring of a string in Python?
...
Just for completeness as nobody else has mentioned it. The third parameter to an array slice is a step. So reversing a string is as simple as:
some_string[::-1]
Or selecting alternate characters would be:
"H-e-l-l-o- -W-o-r-l-d"[::2] # outputs "Hello World"
The a...
Why is subtracting these two times (in 1927) giving a strange result?
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It's a time zone change on December 31st in Shanghai.
See this page for details of 1927 in Shanghai. Basically at midnight at the end of 1927, the clocks went back 5 minutes and 52 seconds. So "1927-12-31 23:54:08" actually happened twic...
How to test that no exception is thrown?
I know that one way to do it would be:
15 Answers
15
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Regex to match only letters
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Use a character set: [a-zA-Z] matches one letter from A–Z in lowercase and uppercase. [a-zA-Z]+ matches one or more letters and ^[a-zA-Z]+$ matches only strings that consist of one or more letters only (^ and $ mark the begin and end of a string respectively).
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Copy constructor for a class with unique_ptr
...) ) {}
};
int main()
{
A a( 42 );
A b = a;
}
You can, as NPE mentioned, use a move-ctor instead of a copy-ctor but that would result in different semantics of your class. A move-ctor would need to make the member as moveable explicitly via std::move:
A( A&& a ) : up_( std::move( a....
What is InputStream & Output Stream? Why and when do we use them?
Someone explain to me what InputStream and OutputStream are?
8 Answers
8
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