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Polymorphism vs Overriding vs Overloading
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The clearest way to express polymorphism is via an abstract base class (or interface)
public abstract class Human{
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public abstract void goPee();
}
This class is abstract because the goPee() method is not definable for Humans. It is only definab...
Switch on ranges of integers in JavaScript [duplicate]
...t over just a chain of if else if statements?
– xtempore
May 31 '13 at 0:15
21
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How to add a changed file to an older (not last) commit in Git
...r the last hour and committed them step by step, but I just realized I've forgot to add a changed file some commits ago.
4 ...
What are the main disadvantages of Java Server Faces 2.0?
...ient side, etc) and the basic Java Servlet API (request/response/session, forwarding/redirecting, etc), no serious disadvantages comes to mind. JSF in its current release still needs to get rid of the negative image it gained during the early ages, during which there were several serious disadvantag...
Timertask or Handler
Let's say that I want to perform some action every 10 seconds and it doesn't necessarily need to update the view.
3 Answer...
Breadth First Vs Depth First
...h what is the difference between Breadth First and Depth first? Any coding or pseudocode examples would be great.
4 Answers...
Is git's semi-secret empty tree object reliable, and why is there not a symbolic name for it?
Git has a well-known, or at least sort-of-well-known, empty tree whose SHA1 is:
3 Answers
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How do I prevent the iPhone screen from dimming or turning off while my application is running?
I'm working on an app that requires no user input, but I don't want the iPhone to enter the power saving mode.
5 Answers
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What is the best way to ensure only one instance of a Bash script is running? [duplicate]
...] $
[Terminal #2] $ lockfile -r 0 /tmp/the.lock
[Terminal #2] lockfile: Sorry, giving up on "/tmp/the.lock"
[Terminal #1] $ rm -f /tmp/the.lock
[Terminal #1] $
[Terminal #2] $ lockfile -r 0 /tmp/the.lock
[Terminal #2] $
After /tmp/the.lock has been acquired your script will be the only one w...
Message Queue vs. Web Services? [closed]
Under what conditions would one favor apps talking via a message queue instead of via web services (I just mean XML or JSON or YAML or whatever over HTTP here, not any particular type)?
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