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Inheriting from a template class in c++
... class). Another such class would be Area<char>. Note that those are completely different classes, which have nothing in common except for the fact that they were generated from the same class template.
Since Area is not a class, you cannot derive the class Rectangle from it. You only can der...
String literals and escape characters in postgresql
...n as a newline when I used it in the query argument to psql's `\copy' meta-command.
– Stew
Dec 31 '15 at 17:09
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Importing from a relative path in Python
...an absolute import. The '..' means, go to the directory above me:
from ..Common import Common
As a caveat, this will only work if you run your python as a module, from outside of the package. For example:
python -m Proj
Original hacky way
This method is still commonly used in some situat...
Compute a confidence interval from sample data
I have sample data which I would like to compute a confidence interval for, assuming a normal distribution.
4 Answers
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How to properly overload the
...am writing a small matrix library in C++ for matrix operations. However my compiler complains, where before it did not. This code was left on a shelf for 6 months and in between I upgraded my computer from debian etch to lenny (g++ (Debian 4.3.2-1.1) 4.3.2
) however I have the same problem on a Ubun...
How do you do a ‘Pause’ with PowerShell 2.0?
...
/c Carries out the command specified by string and then terminates | out-null pipes the output to out-null, where you'll never see it If you want to see the "Press any key to continue..." message, remove the pipe. Also, this doesn't seem to...
Python naming conventions for modules
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Using LINQ to concatenate strings
...u really want to use Aggregate use variant using StringBuilder proposed in comment by CodeMonkeyKing which would be about the same code as regular String.Join including good performance for large number of objects:
var res = words.Aggregate(
new StringBuilder(),
(current, next) => cu...
What is the best way to check for Internet connectivity using .NET?
...lient = new WebClient())
using (client.OpenRead("http://google.com/generate_204"))
return true;
}
catch
{
return false;
}
}
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Difference between timestamps with/without time zone in PostgreSQL
...is specified with a particular time zone.
Here are examples covering the combinations of those factors:
foo=> SET TIMEZONE TO 'Japan';
SET
foo=> SELECT '2011-01-01 00:00:00'::TIMESTAMP;
timestamp
---------------------
2011-01-01 00:00:00
(1 row)
foo=> SELECT '2011-01-01 00:...