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Is There a Better Way of Checking Nil or Length == 0 of a String in Ruby?

Is there a better way than the following to check to see if a string is nil OR has a length of 0 in Ruby? 16 Answers ...
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Creating a URL in the controller .NET MVC

I need to be able to construct a link in the Action on the controller to send an email. What is best practice to do this? I don't want to construct it myself in case my routes change. ...
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JSLint: was used before it was defined

Hi I have the 3 javascript files. 2 Answers 2 ...
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Is there a benefit to defining a class inside another class in Python?

What I'm talking about here are nested classes. Essentially, I have two classes that I'm modeling. A DownloadManager class and a DownloadThread class. The obvious OOP concept here is composition. However, composition doesn't necessarily mean nesting, right? ...
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What does the plus sign do in '+new Date'

I've seen this in a few places 7 Answers 7 ...
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std::shared_ptr of this

I am currently trying to learn how to use smart pointers. However while doing some experiments I discovered the following situation for which I could not find a satifying solution: ...
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twitter bootstrap autocomplete dropdown / combobox with Knockoutjs

I have a requirement where I HAVE TO use bootstrap autocomplete dropdown, BUT user can have free form text in that dropdown if they wish. Before you think about TypeAhead, I could use Bootstrap TypeAhead textbox, but I need to have the dropdown becasue we want to give some default values as headstar...
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Why does “,,,” == Array(4) in Javascript?

Boot up your interpreter/console and try the comparison 6 Answers 6 ...
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Ioc/DI - Why do I have to reference all layers/assemblies in application's entry point?

(Related to this question, EF4: Why does proxy creation have to be enabled when lazy loading is enabled? ). 4 Answers ...
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How to correctly iterate through getElementsByClassName

I am Javascript beginner. 6 Answers 6 ...