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Test for existence of nested JavaScript object key
...th Claudiu's modification which is also significantly more performant than selected answer. See jsperf here jsperf.com/check-if-deep-property-exists-with-willnotthrow
– netpoetica
Nov 27 '14 at 5:35
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Visual Studio Solutions Folder as real Folders
...tion Folder'. This will create a solution folder with the same name as you selected and add the items inside of that folder to the solution folder. This will not move the files on disk.
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Android multiple email attachments using Intent
..." will appear in the application chooser dialog, thus user will be able to select the default application for sending the emails with multiple attachments.
– Idolon
Oct 10 '11 at 10:57
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JPA or JDBC, how are they different?
... standard for connecting to a DB directly and running SQL against it - e.g SELECT * FROM USERS, etc. Data sets can be returned which you can handle in your app, and you can do all the usual things like INSERT, DELETE, run stored procedures, etc. It is one of the underlying technologies behind most...
Drawing a line/path on Google Maps
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// This Activity will draw a line between two selected points on Map
public class MainActivity extends MapActivity {
MapView myMapView = null;
MapController myMC = null;
GeoPoint geoPoint = null;
/** Called when the activity is first created. */
@Override
public ...
html onchange event not working
...ck into a field and get a dropdown of previously entered text, and you can select from among your choices using a mouse click. Keystroke trapping will not detect either of these types of changes.
Sadly, there is no "onchange" event that reports changes immediately, at least as far as I know. But th...
Null vs. False vs. 0 in PHP
...mpatibility). Despite the design wishing some consistency (outlined in the selected answer here), it all get confusing when you consider method returns that use false/null in not-so-easy to reason ways.
You will often see null being used when they are already using false for something. e.g. filter_i...
Keyboard shortcut to “untab” (move a block of code to the left) in eclipse / aptana?
...t uses eclipse's 'smart insert' features instead:
Control X to erase the selected block of text, and keep it for pasting.
Control+Shift Enter, to open a new line for editing above the one you are at.
You might want to adjust the tabbing position at this point. This is where tabbing will start, unl...
PHP memory profiling
...01-29) which can be used in Qcachegrind or similar tool. Just make sure to select the memory option :)
From the docs:
Since Xdebug 2.6, the profiler also collects information about how much memory is being used, and which functions aGnd methods increased memory usage.
I'm not familiar with th...
How to view the contents of an Android APK file?
...It's shipped with Android Studio now.
Just go to Build/Analyze APK... then select your APK :)
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