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How to tell which version of a gem a rails app is using

...ns? Do I have rails version 2 or not? Maybe I have rails version 2 and a more advanced bundler? Is this good/bad? (Yes, I know it's bad to have such an old version of rails, I want to know if it's catastrophic to have such a mismatched (if it is) rails and bundler). – Brend...
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startsWith() and endsWith() functions in PHP

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Bootstrap 3 Slide in Menu / Navbar on Mobile [closed]

...Separated link</a></li> <li><a href="#">One more separated link</a></li> <li><a href="#">Action</a></li> <li><a href="#">Another action</a></li> <li><a href="#">Something else ...
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What is Ember RunLoop and how does it work?

...opagated, and perhaps their bindings propagated, and so on. Obviously, the more changes that need to be propagated from a single event, the longer the RunLoop will take to finish. Here's a (pretty unfair) example of how the RunLoop can get bogged down with propagating changes compared to another fra...
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Why does this CSS margin-top style not work?

... 8.3.1 Collapsing margins In CSS, the adjoining margins of two or more boxes (which might or might not be siblings) can combine to form a single margin. Margins that combine this way are said to collapse, and the resulting combined margin is called a collapsed margin. Adjoining vertica...
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How to set an iframe src attribute from a variable in AngularJS

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How to use a dot “.” to access members of dictionary?

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How to start two threads at “exactly” the same time

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In Python, how do I indicate I'm overriding a method?

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How to order events bound with jQuery

... this does not work any more since it uses this.data("events"), see here stackoverflow.com/questions/12214654/… – Toskan Mar 17 '14 at 1:09 ...