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Extract numbers from a string
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$str = 'In My Cart : 11 12 items';
preg_match_all('!\d+!', $str, $matches);
print_r($matches);
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How can you find out which process is listening on a port on Windows?
...Note Dane's recommendation for TCPView. It looks very useful!
-a Displays all connections and listening ports.
-b Displays the executable involved in creating each connection or listening port. In some cases well-known executables host multiple independent components, and in these cases the sequen...
How to map atan2() to degrees 0-360
...swered Aug 21 '09 at 10:20
erikkallenerikkallen
31k1212 gold badges7575 silver badges114114 bronze badges
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The selected run destination is not valid for this action
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I had that issue several times. Basically, just set the Base SDK in Build Settings to Latest OS X and it should work properly.
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How to recognize USB devices in Virtualbox running on a Linux host? [closed]
...and log in again
Attach to your PC the USB devices you want to be automatically mounted in the VM (virtual machine).
Open Virtualbox
Select your VM and go to "Machine" -> "Settings" -> "USB".
Check "Enable USB Controller"; click on the icon with the USB plug and the plus, and
click on the devi...
findViewByID returns null
First of all: yes, I read all the other threads on this topic. And not only those from this site... (you see, I'm a little frustrated)
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Echo tab characters in bash script
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That's because echo -e is not POSIX and make calls /bin/sh which is normally not the program use use interactively, and normally hasn't -e implemented. For portability, use printf '\t' instead.
– Jo So
Oct 5 '12 at 19:02
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How can I check MySQL engine type for a specific table?
... database contains several tables using different storage engines
(specifically myisam and innodb). How can I find out which tables are
using which engine?
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How does PHP 'foreach' actually work?
...r the simplest case is Traversable objects, as for these foreach is essentially only syntax sugar for code along these lines:
foreach ($it as $k => $v) { /* ... */ }
/* translates to: */
if ($it instanceof IteratorAggregate) {
$it = $it->getIterator();
}
for ($it->rewind(); $it->v...
Explanation of the UML arrows
...ort: A relationship between packages, indicating that one
package includes all the definitions of another.
14: Dependency: The definition or implementation of the dependent classifier might change if
the classifier at the arrowhead end is changed.
15: Realization: The class implements the operati...