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Better way to check variable for null or empty string?
...solves it, I'm not sure if it's simpler. +1 anyway
– Allain Lalonde
Dec 19 '08 at 15:36
4
Since O...
Keyboard shortcut to change font size in Eclipse?
...d Fonts preference page, the commands persistently change the font size in all editors of the same type. If the editor type's font is configured to use a default font, then that default font will be zoomed.
So, the font size change is not limited to the current file and the new value of the font s...
Should I call Close() or Dispose() for stream objects?
... StreamWriter etc implements IDisposable interface. That means, we can call Dispose() method on objects of these classes. They've also defined a public method called Close() . Now that confuses me, as to what should I call once I'm done with objects? What if I call both?
...
JavaScript OOP in NodeJS: how?
...onstructor.apply( this, arguments );
}
//Pointless override to show super calls
//note that for performance (e.g. inlining the below is impossible)
//you should do
//method.$getAge = _super.getAge;
//and then use this.$getAge() instead of super()
method.getAge = function() {
return _super.getAge...
How to set a Timer in Java?
How to set a Timer, say for 2 minutes, to try to connect to a Database then throw exception if there is any issue in connection?
...
How to move screen without moving cursor in Vim?
...of the screen
(Careful with zz, if you happen to have Caps Lock on accidentally, you will save and exit vim!)
zt - move current line
to the top of the screen
zb - move
current line to the bottom of the
screen
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View the Task's activity stack
...
is there a nice way to show all of the tasks&activities stack of the current app via logcat? do we really need to parse the adb command ?
– android developer
Feb 13 '12 at 6:36
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What is the LD_PRELOAD trick?
...ibrary (including the C runtime, libc.so). So to run ls with your special malloc() implementation, do this:
$ LD_PRELOAD=/path/to/my/malloc.so /bin/ls
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Is it better to use Enumerable.Empty() as opposed to new List() to initialize an IEnumerable
...uld be noticeable impact.
Enumerable.Empty does not create an object per call thus putting less load on GC.
If the code is in low-throughput location, then it boils down to aesthetic considerations though.
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How to test an Internet connection with bash?
...on't get, just check page availability
$? : shell return code
0 : shell "All OK" code
Without wget
#!/bin/bash
echo -e "GET http://google.com HTTP/1.0\n\n" | nc google.com 80 > /dev/null 2>&1
if [ $? -eq 0 ]; then
echo "Online"
else
echo "Offline"
fi
...