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Does use of final keyword in Java improve the performance?
...e it's almost never worth it; YMMV.)
EDIT: As final fields have been mentioned, it's worth bringing up that they are often a good idea anyway, in terms of clear design. They also change the guaranteed behaviour in terms of cross-thread visibility: after a constructor has completed, any final fields...
Benefits of prototypal inheritance over classical?
...gging my feet all these years and decided to learn JavaScript "properly". One of the most head-scratching elements of the languages design is it's implementation of inheritance. Having experience in Ruby, I was really happy to see closures and dynamic typing; but for the life of me can't figure ou...
How do I create a nice-looking DMG for Mac OS X using command-line tools?
...l not set the icon position correctly - it seems to be a Snow Leopard bug. One workaround is to simply call close/open after setting the icons, i.e.:
..
set position of item "'${applicationName}'" of container window to {100, 100}
set position of item "Applications" of container window to {375, 100...
Finding all cycles in a directed graph
... page in my search and since cycles are not same as strongly connected components, I kept on searching and finally, I found an efficient algorithm which lists all (elementary) cycles of a directed graph. It is from Donald B. Johnson and the paper can be found in the following link:
http://www.cs.tu...
Does ruby have real multithreading?
...s here: the
Ruby Programming Language and the specific threading model of one
specific implementation of the Ruby Programming Language. There
are currently around 11 different implementations of the Ruby
Programming Language, with very different and unique threading
models.
(Unfortunately, onl...
Copy existing project with a new name in Android Studio
...
As free3dom pointed out, here's what should be done:
Create a copy using file manager
Manually edit the app's build.gradle file to change the package name (you can use the file manager).
Manually edit AndroidManifest.xml to change the package name.
Run gradle sync.
Open ...
How do SQL EXISTS statements work?
...XISTS, because there will be duplicate parent records if there's more than one child record associated to the parent.
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When to use nil, blank, empty? [duplicate]
... and you need to include blank? only, here is how to cherry-pick just this one bit: require 'active_support/core_ext/object/blank (source)
– driftcatcher
Oct 11 '16 at 4:44
...
What are the most-used vim commands/keypresses?
...'A' for appending text at the end of the line, or…" I can't imagine everyone uses all 20 different keypresses to navigate text, 10 or so keys to start adding text, and 18 ways to visually select an inner block. Or do you!?
...
CSS3 transition events
...sent at the end of a transition. The event is an instance of WebKitTransitionEvent, and its type is webkitTransitionEnd.
box.addEventListener( 'webkitTransitionEnd',
function( event ) { alert( "Finished transition!" ); }, false );
Mozilla
There is a single event that is fired when trans...