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optional local variables in rails partial templates: how do I get out of the (defined? foo) mess?
...sent_local_var: "bar", foo: "baz" %>
Have a look at te official Rails guide here. Valid from RoR 3.1.0.
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How to directly initialize a HashMap (in a literal way)?
...able and does not permit null keys/values)
for more info, see Guava's user guide article on its immutable collection types
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How can I extract audio from video with ffmpeg?
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Here's a guide for the -q:a values: trac.ffmpeg.org/wiki/Encode/MP3 Zero is the highest-quality VBR setting, which typically results in average bitrates in the upper part of the sane CBR range (where 320 kbit/s is the maximum, probabl...
Usage of forceLayout(), requestLayout() and invalidate()
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Here you can find some response:
http://developer.android.com/guide/topics/ui/how-android-draws.html
For me a call to invalidate() only refreshes the view and a call to requestLayout() refreshes the view and compute the size of the view on the screen.
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Service Reference Error: Failed to generate code for the service reference
...s built using WCF and some methods parameters inside it are of type System.Guid, they will be translated to strings in the generated client if the reuse types option is disabled.
An alternative that I prefer to disabling reusing types is to add the service reference from Class Library project speci...
How to remove an iOS app from the App Store
...e" option in the "Manage Your Apps" section of iTunes Connect. Can anyone guide me on how I can remove my app from the App Store?
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When to use setAttribute vs .attribute= in JavaScript?
...deValue.
Performance
I've built a jsperf test case to show the difference: https://jsperf.com/set-attribute-comparison. Basically, In order:
Custom properties because they don't affect the DOM and are not attributes.
Special mappings provided by the browser (dir, id, className).
If attributes alrea...
List OrderBy Alphabetical Order
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for me this useful dummy guide - Sorting in Generic List - worked.
it helps you to understand 4 ways(overloads) to do this job with very complete and clear explanations and simple examples
List.Sort ()
List.Sort (Generic Comparison)
List.Sort (G...
Converting a Java Keystore into PEM Format
...on of the PKS12 format I believe see: java.sun.com/javase/6/docs/technotes/guides/security/jsse/… (section on java.security.KeyStoreException: TrustedCertEntry not supported)
– andygavin
Sep 11 '09 at 12:10
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Android ListView headers
....g December 01, 2016) as header.
I used the StickyHeaderListView library
https://github.com/emilsjolander/StickyListHeaders
Convert the date to long in millis [do not include the time] and make it as the header Id.
@Override
public long getHeaderId(int position) {
return <date in millis&g...