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Generic TryParse
...nverter(typeof(T));
if(converter != null)
{
// Cast ConvertFromString(string text) : object to (T)
return (T)converter.ConvertFromString(input);
}
return default(T);
}
catch (NotSupportedException)
{
return default(T);
}...
How do I pass a unique_ptr argument to a constructor or a function?
...eter by value. std::move doesn't actually move anything; it's just a fancy cast. std::move(nextBase) returns a Base&& that is an r-value reference to nextBase. That's all it does.
Because Base::Base(std::unique_ptr<Base> n) takes its argument by value rather than by r-value reference,...
How can I start PostgreSQL server on Mac OS X?
I had forgotten to run the initdb command.
33 Answers
33
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How to pass an array into a SQL Server stored procedure
...EmployeesTable
-- inner join AnotherTable on ...
where @List like '%;'+cast(employeeID as varchar(20))+';%'
END
GO
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What is an existential type?
...ely become opaque; perhaps the only thing you can still do with it is type-cast it to Object.
Summary:
===========================================================
| universally existentially
| quantified type quantified type
------------------...
C# short/long/int literal format?
...
Does this mean you have to cast everywhere you use short/ushort/byte/sbyte? Eg.: somebyte = somebool ? (byte) 1 : (byte) 0;
– mola
Feb 7 '13 at 13:19
...
Open multiple Eclipse workspaces on the Mac
...he officially supported way to do this as of 10.5. Earlier version of OS X and even 10.5 and up should still work using the following instructions though.
Open the command line (Terminal)
Navigate to your Eclipse installation folder, for instance:
cd /Applications/eclipse/
cd /Developer/Eclip...
Tactics for using PHP in a high-load site
...gh to attain high server loads. Treat me as (sigh) an alien that has just landed on the planet, albeit one that knows PHP and a few optimisation techniques.
...
Windows batch files: .bat vs .cmd?
As I understand it, .bat is the old 16-bit naming convention, and .cmd is for 32-bit Windows, i.e., starting with NT. But I continue to see .bat files everywhere, and they seem to work exactly the same using either suffix. Assuming that my code will never need to run on anything older than NT, d...
CPU Privilege Rings: Why rings 1 and 2 aren't used?
...the modern protection model) only has a concept of privileged (ring 0,1,2) and unprivileged, the benefit to rings 1 and 2 were diminished greatly.
The intent by Intel in having rings 1 and 2 is for the OS to put device drivers at that level, so they are privileged, but somewhat separated from the r...