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Insert, on duplicate update in PostgreSQL?
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answered Jul 10 '09 at 12:18
Stephen DenneStephen Denne
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Take the content of a list and append it to another list
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Sven MarnachSven Marnach
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What's the difference between emulation and simulation? [duplicate]
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10 Answers
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Active
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Is it possible to figure out the parameter type and return type of a lambda?
... test code below:
int main()
{
auto lambda = [](int i) { return long(i*10); };
typedef function_traits<decltype(lambda)> traits;
static_assert(std::is_same<long, traits::result_type>::value, "err");
static_assert(std::is_same<int, traits::arg<0>::type>::valu...
Convert a row of a data frame to vector
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edited Oct 25 '18 at 6:10
answered Oct 25 '18 at 4:46
Rt...
How can I check if a command exists in a shell script? [duplicate]
...to your if clause. According to my tests (https://www.topbug.net/blog/2016/10/11/speed-test-check-the-existence-of-a-command-in-bash-and-zsh/), the 1st and 3rd method are recommended in bash and the 5th method is recommended in zsh in terms of speed.
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Is there a Unix utility to prepend timestamps to stdin?
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KieronKieron
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Fastest way to convert Image to Byte array
...sing(){} statement
– Neil.Allen
Nov 10 '14 at 21:10
@Neil.Allen I am new here can you please tell why?
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How to convert a negative number to positive?
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edited Oct 5 '10 at 23:28
answered Oct 4 '10 at 10:26
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Why XML-Serializable class need a parameterless constructor
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cfedukecfeduke
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