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iPhone viewWillAppear not firing
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If you use a navigation controller and set its delegate, then the view{Will,Did}{Appear,Disappear} methods are not invoked.
You need to use the navigation controller delegate methods instead:
navigationController:willShowVi...
find filenames NOT ending in specific extensions on Unix?
...the grep command:
find . | grep -v '(dll|exe)$'
The -v flag on grep specifically means "find things that don't match this expression."
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How can I convert a string to a number in Perl?
...ope [rabdelaz@Linux_Desktop:~/workspace/akatest_5]$perl -e 'print "nope\n" if "1,000" > 10;'
– Ramy
May 22 '14 at 15:24
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Why should I care about lightweight vs. annotated tags?
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The big plus of an annotated tag is that you know who created it. Just like with commits, sometimes it's nice to know who did it. If you're a developer and you see that v1.7.4 has been tagged (declared ready) and you're not so sure, who do you talk to? The person whose n...
Convert an NSURL to an NSString
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In Objective-C:
NSString *myString = myURL.absoluteString;
In Swift:
var myString = myURL.absoluteString
More info in the docs:
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Possible to perform cross-database queries with PostgreSQL?
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Note: As the original asker implied, if you are setting up two databases on the same machine you probably want to make two schemas instead - in that case you don't need anything special to query across them.
postgres_fdw
Use postgres_fdw (foreign data wrapper)...
Alarm Manager Example
...ontext.ALARM_SERVICE ));
// set alarm to fire 5 sec (1000*5) from now (SystemClock.elapsedRealtime())
manager.set( AlarmManager.ELAPSED_REALTIME_WAKEUP, SystemClock.elapsedRealtime() + 1000*5, pintent );
}
Remember though that the AlarmManager fires even when your application ...
What are the differences between “=” and “
...:
median((x = 1 : 10))
But also:
if (! (nf = length(from))) return()
Now you might object that such code is atrocious (and you may be right). But I took this code from the base::file.copy function (replacing <- with =) — it’s a pervasive pattern in much of the core R codebase.
The ori...
switch / pattern matching idea
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I know it's an old topic, but in c# 7 you can do :
switch(shape)
{
case Circle c:
WriteLine($"circle with radius {c.Radius}");
break;
case Rectangle s when (s.Length == s.Height):
WriteLine($"{s...
How to print the full NumPy array, without truncation?
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if you only want to print a numpy array only once, unfortunately this solution has the downside of requiring you to reset this configuration change after doing the print.
– Trevor Boyd Smith
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