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Targeting position:sticky elements that are currently in a 'stuck' state

position: sticky works on some mobile browsers now, so you can make a menu bar scroll with the page but then stick to the top of the viewport whenever the user scrolls past it. ...
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.rar, .zip files MIME Type

I'm developing a simple php upload script, and users can upload only ZIP and RAR files. 6 Answers ...
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RSS Feeds in ASP.NET MVC

How would you reccommend handling RSS Feeds in ASP.NET MVC? Using a third party library? Using the RSS stuff in the BCL? Just making an RSS view that renders the XML? Or something completely different? ...
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Rails update_attributes without save?

Is there an alternative to update_attributes that does not save the record? 4 Answers ...
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Converting an array of objects to ActiveRecord::Relation

I have an array of objects, let's call it an Indicator . I want to run Indicator class methods (those of the def self.subjects variety, scopes, etc) on this array. The only way I know to run class methods on a group of objects is to have them be an ActiveRecord::Relation. So I end up resorting to...
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How to use Swift @autoclosure

I noticed when writing an assert in Swift that the first value is typed as 6 Answers ...
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Is gcc std::unordered_map implementation slow? If so - why?

We are developing a highly performance critical software in C++. There we need a concurrent hash map and implemented one. So we wrote a benchmark to figure out, how much slower our concurrent hash map is compared with std::unordered_map . ...
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$on and $broadcast in angular

I have a footerController and codeScannerController with different views. 4 Answers 4 ...
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Why do we need fibers

For Fibers we have got classic example: generating of Fibonacci numbers 2 Answers 2 ...
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Abort makefile if variable not set

How could I abort a make/makefile execution based on a makefile's variable not being set/valued? 5 Answers ...