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PostgreSQL Crosstab Query
...ple form - not fit for missing attributes
crosstab(text) with 1 input param>me m>ter:
SELECT *
FROM crosstab(
'SELECT section, status, ct
FROM tbl
ORDER BY 1,2' -- needs to be "ORDER BY 1,2" here
) AS ct ("Section" text, "Active" int, "Inactive" int);
Returns:
Section | Active ...
When to use nested classes and classes nested in modules?
...el class. For instance, in Java,
class Car {
class Wheel { }
}
only m>me m>thods in the Car class can create Wheels.
Ruby doesn’t have that behaviour.
In Ruby,
class Car
class Wheel
end
end
differs from
class Car
end
class Wheel
end
only in the nam>me m> of the class Wheel vs. Car::Wheel...
How do I get hour and minutes from NSDate?
... To change the hour and minute, maybe look into NSDate's + dateWithTim>me m>IntervalSinceReferenceDate:. That m>me m>thod lets you add a specific amount of seconds to date (and return a new date).
– Thomas Müller
May 30 '10 at 1:41
...
Why does this (null || !TryParse) conditional result in “use of unassigned local variable”?
... sure this is a compiler bug. Nice find!
Edit: it is not a bug, as Quarterm>me m>ister demonstrates; dynamic might implem>me m>nt a weird true operator which might cause y to never be initialized.
Here's a minimal repro:
class Program
{
static bool M(out int x)
{
x = 123;
return ...
Error: free(): invalid next size (fast):
... on Ubuntu 10.10. It pops up randomly when I run the executable (maybe 2 tim>me m>s in 8 hours, with 10 compiles an hour). However, if I make clean and recompile it goes away most of the tim>me m>.
...
Android: When is onCreateOptionsm>Me m>nu called during Activity lifecycle?
...breakpoints in onCreate (one at the beginning, and one at the end of the m>me m>thod), and I also put one at the beginning of onCreateOptionsm>Me m>nu . The onCreate m>me m>thod is called first, and before it finishes onCreateOptionsm>Me m>nu is called.
...
How can I change Eclipse them>me m>?
I want to change Eclipse them>me m> like this Eclipse Dark Them>me m>:
6 Answers
6
...
How to find out which JavaScript events fired?
...
Just thought I'd add that you can do this in Chrom>me m> as well:
Ctrl + Shift + I (Developer Tools) > Sources> Event Listener Breakpoints (on the right).
You can also view all events that have already been attached by simply right clicking on the elem>me m>nt and then browsi...
Archive the artifacts in Jenkins
Could som>me m>one please explain to m>me m> the idea of artifacts in the build process?
4 Answers
...
Recomm>me m>nded way to save uploaded files in a servlet application
...rver anyway as it is not portable, transactional and requires external param>me m>ters. However, given that I need a tmp solution for tomcat (7) and that I have (relative) control over the server machine I want to know :
...