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Hidden Features of Java
After reading Hidden Features of C# I wondered, What are some of the hidden features of Java?
100 Answers
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What is the difference between an abstract function and a virtual function?
...hat is the difference between an abstract function and a virtual function? In which cases is it recommended to use virtual or abstract? Which one is the best approach?
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applicationWillEnterForeground vs. applicationDidBecomeActive, applicationWillResignActive vs. appli
Which is the proper delegate to implement when an application is waking up from being in the background and you want it to prep it to be active?
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How to build sources jar with gradle
I am working with an open source project that is built with gradle. I would like to generate a (project)-sources.jar file that I can load into my IDE (IntelliJ IDEA) and debug through the project. I know how to load the file if I can generate it.
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How to build a framework or library for other developers, the secure way? [closed]
...rary that will be very helpful for any iOS developer. So we're seriously thinking about switching from app development to framework/library development.
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How should I choose an authentication library for CodeIgniter? [closed]
I see there are a few . Which ones are maintained and easy to use? What are their pros and cons?
11 Answers
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Why is the time complexity of both DFS and BFS O( V + E )
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Your sum
v1 + (incident edges) + v2 + (incident edges) + .... + vn + (incident edges)
can be rewritten as
(v1 + v2 + ... + vn) + [(incident_edges v1) + (incident_edges v2) + ... + (incident_edges vn)]
and the first group is O(N) while ...
When should one use a 'www' subdomain?
When browsing through the internet for the last few years, I'm seeing more and more pages getting rid of the 'www' subdomain.
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iPhone and OpenCV
I know that OpenCV was ported to Mac OS X , however I did not find any info about a port to the iPhone.
13 Answers
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Can't find @Nullable inside javax.annotation.*
I want use @Nullable annotation to eliminate NullPointerExceptions .
I found some tutorials on the net, I noticed that this annotation comes from the package javax.annotation.Nullable ;
but when I import it a compilation error is generated: cannot find symbol
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