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How to vertically center a container in Bootstrap?

... for a way to vertically center the container div inside the jumbotron and to set it in the middle of the page. 9 Answ...
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How do you add CSS with Javascript?

... { color: red; }', sheet.cssRules.length); ...on all but (naturally) IE8 and prior, which uses its own marginally-different wording: sheet.addRule('strong', 'color: red;', -1); There is a theoretical advantage in this compared to the createElement-set-innerHTML method, in that you don't have to...
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The smallest difference between 2 Angles

... Simpler and makes more sense read out loud, though effectively the same thing, first bti figures out the angle, second part makes sure its always the smaller of the 2 possible angles – Tom J Nowell ...
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What is mattr_accessor in a Rails module?

... Rails extends Ruby with both mattr_accessor (Module accessor) and cattr_accessor (as well as _reader/_writer versions). As Ruby's attr_accessor generates getter/setter methods for instances, cattr/mattr_accessor provide getter/setter methods at the class or module level. Thus: module...
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MongoDB or CouchDB - fit for production? [closed]

...oduction for over a year now. They are using it for everything from users and blog posts, to every image on the site. shopwiki is using it for a few things including real time analytics and a caching layer. They are doing over 1000 writes per second to a fairly large database. If you go to the mo...
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How do I check what version of Python is running my script?

... to your code: assert sys.version_info >= (2, 5) This compares major and minor version information. Add micro (=0, 1, etc) and even releaselevel (='alpha','final', etc) to the tuple as you like. Note however, that it is almost always better to "duck" check if a certain feature is there, and if...
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C++ Lock-free Hazard Pointer(冒险指针) - C/C++ - 清泛网 - 专注C/C++及内核技术

...std::memory_order_acquire); p; p = p->next_) { if (!p->active_.test_and_set()) { return p; } } auto p = new HazardPointer<T>(); p->active_.test_and_set(); do { p->next_ = head_list_.load(std::memory_order_acquire); } while (!head_list_.compare...
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Setting the filter to an OpenFileDialog to allow the typical image formats?

... Probably want to get rid of the spaces before and after the pipe character and between the semi-colon and asterisk in the filter portion. But good, otherwise. – vapcguy Oct 4 '16 at 14:46 ...
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Save An Image To Application Documents Folder From UIView On IOS

I have a UIImageView that allows a user to place and hold an image until it can be saved. The problem is, I can't figure out how to actually save and retrieve the image I've placed in the view. ...
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Is there a way to make a link clickable in the OSX Terminal?

... Before OSX Lion: cmd+shift+double-click on a URL in Terminal.app and it will open in the default program. OSX Lion: cmd+double-click (otherwise you will enter fullscreen mode). share | i...