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How do I get the first element from an IEnumerable in .net?

I often want to grab the first element of an IEnumerable<T> in .net, and I haven't found a nice way to do it. The best I've come up with is: ...
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“VT-x is not available” when i start my Virtual machine [closed]

I have created a virtual machine using the VMWare software and getting an error while starting the Virtual Machine. It says "VT-x is not available: ...
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How do I truncate a .NET string?

I would like to truncate a string such that its length is not longer than a given value. I am writing to a database table and want to ensure that the values I write meet the constraint of the column's datatype. ...
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How do I put the image on the right side of the text in a UIButton?

I don't want to use a subview if I can avoid it. I want a UIButton with a background image, text, and an image in it. Right now, when I do that, the image is on the left side of the text. The background image, text, and image all have different highlight states. ...
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Your project contains error(s), please fix it before running it

I am developing a simple Android application. But when I run Eclipse, it shows the following error: 26 Answers ...
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Should I use single or double colon notation for pseudo-elements?

Since IE7 and IE8 don't support the double-colon notation for pseudo-elements (e.g. ::after or ::first-letter ), and since modern browsers support the single-colon notation (e.g. :after ) for backwards compatibility, should I use solely the single-colon notation and when IE8's market share drops...
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Quickly create large file on a Windows system

In the same vein as Quickly create a large file on a Linux system , I'd like to quickly create a large file on a Windows system. By large I'm thinking 5 GB. The content doesn't matter. A built-in command or short batch file would be preferable, but I'll accept an application if there are no other...
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How do I get PHP errors to display?

I have checked my PHP ini file ( php.ini ) and display_errors is set and also error reporting is E_ALL . I have restarted my Apache webserver. ...
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android edittext onchange listener

I know a little bit about TextWatcher but that fires on every character you enter. I want a listener that fires whenever the user finishes editing. Is it possible? Also in TextWatcher I get an instance of Editable but I need an instance of EditText . How do I get that? ...
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How to avoid the “Circular view path” exception with Spring MVC test

I have the following code in one of my controllers: 20 Answers 20 ...