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What's the easiest way to install a missing Perl module?

...Debian/Ubuntu: apt-cache search 'perl$' Arch Linux: pacman -Ss '^perl-' Gentoo: category dev-perl You should always prefer them as you benefit from automatic (security) updates and the ease of removal. This can be pretty tricky with the cpan tool itself. For Gentoo there's a nice tool called g-cp...
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What is Dependency Injection and Inversion of Control in Spring Framework?

...t how they will get those dependencies. It is the responsibility of Spring to provide the required dependencies for creating objects. For example: Suppose we have an object Employee and it has a dependency on object Address. We would define a bean corresponding to Employee that will define its dep...
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Create a list from two object lists with linq

... extension method Union. For example: var mergedList = list1.Union(list2).ToList(); This will return a List in which the two lists are merged and doubles are removed. If you don't specify a comparer in the Union extension method like in my example, it will use the default Equals and GetHashCode m...
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Is there a way to create xxhdpi, xhdpi, hdpi, mdpi and ldpi drawables from a large scale image?

Is there a way to create xxhdpi, xhdpi, hdpi, mdpi and ldpi drawables from a large scale image automatically? For example assume that I have a 512x512 image and I want to have different versions of this images for different screen resolutions supported by Android in appropriate folders. ...
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How do I trim leading/trailing whitespace in a standard way?

... If you can modify the string: // Note: This function returns a pointer to a substring of the original string. // If the given string was allocated dynamically, the caller must not overwrite // that pointer with the returned value, since the original pointer must be // deallocated using the same ...
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What exactly are unmanaged resources?

I want to know about unmanaged resources. Can anyone please give me a basic idea? 7 Answers ...
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Javascript - How to detect if document has loaded (IE 7/Firefox 3)

I want to call a function after a document loads, but the document may or may not have finished loading yet. If it did load, then I can just call the function. If it did NOT load, then I can attach an event listener. I can't add an eventlistener after onload has already fired since it won't get cal...
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What is the difference between ExecuteScalar, ExecuteReader and ExecuteNonQuery?

... I thought ExecuteNonQuery is used when you need to call stored procedures that will return a collection of tables. – Gogutz Mar 4 '14 at 6:26 ...
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How To Accept a File POST

I'm using asp.net mvc 4 webapi beta to build a rest service. I need to be able to accept POSTed images/files from client applications. Is this possible using the webapi? Below is how action I am currently using. Does anyone know of an example how this should work? ...
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What's the purpose of META-INF?

... Generally speaking, you should not put anything into META-INF yourself. Instead, you should rely upon whatever you use to package up your JAR. This is one of the areas where I think Ant really excels: specifying JAR file manifest attributes. It's very easy to say somethin...