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Empty set literal?

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MVC Vs n-tier architecture

I was wondering what exactly is the difference between MVC(which is an architectural pattern) and an n-tier architecture for an application. I searched for it but couldn't find a simple explanation. May be I am a bit naive on MVC concepts, so if anyone can explain the difference then it would be gre...
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How can I parse a YAML file from a Linux shell script?

I wish to provide a structured configuration file which is as easy as possible for a non-technical user to edit (unfortunately it has to be a file) and so I wanted to use YAML. I can't find any way of parsing this from a Unix shell script however. ...
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Programmatically open new pages on Tabs

I'm trying to "force" Safari or IE7 to open a new page using a new tab . 11 Answers 1...
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Significant new inventions in computing since 1980

This question arose from comments about different kinds of progress in computing over the last 50 years or so. 129 Answer...
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In Java, what does NaN mean?

I have a program that tries to shrink a double down to a desired number. The output I get is NaN . 11 Answers ...
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Hyphen, underscore, or camelCase as word delimiter in URIs?

I'm designing an HTTP-based API for an intranet app. I realize it's a pretty small concern in the grand scheme of things, but: should I use hyphens, underscores, or camelCase to delimit words in the URIs? ...
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In Java, is there a way to write a string literal without having to escape quotes?

Say you have a String literal with a lot of quotation marks inside it. You could escape them all, but it's a pain, and difficult to read. ...
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How do Trigonometric functions work?

So in high school math, and probably college, we are taught how to use trig functions, what they do, and what kinds of problems they solve. But they have always been presented to me as a black box. If you need the Sine or Cosine of something, you hit the sin or cos button on your calculator and you'...
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Why this line xmlns:android=“http://schemas.android.com/apk/res/android” must be the first in the la

Why is this line needed in xml layout file? 12 Answers 12 ...