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jQuery vs document.querySelectorAll

I heard several times that jQuery's strongest asset is the way it queries and manipulates elements in the DOM: you can use CSS queries to create complex queries that would be very hard to do in regular javascript . However , as far as I know, you can achieve the same result with document.querySele...
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What is Cache-Control: private?

...r browser did have to suffer the delay of sending a request to the server, and wait for a response, but it did save having to re-download the static content. Why Max-Age? Why Expires? Because Last-Modified sucks. Not everything on the server has a date associated with it. If I'm building a page o...
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Make absolute positioned div expand parent div height

... width: 145px; float: left; } Finally, add a clearfix to the parent and you're done (see the fiddle for the complete solution). Generally, as long as the element with absolute position is positioned at the top of the parent element, chances are good that you find a workaround by floating the...
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docker mounting volumes on host

... The VOLUME command will mount a directory inside your container and store any files created or edited inside that directory on your hosts disk outside the container file structure, bypassing the union file system. The idea is that your vol...
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How to use a decimal range() step value?

Is there a way to step between 0 and 1 by 0.1? 33 Answers 33 ...
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How do I run all Python unit tests in a directory?

... that will, you guessed it, run all files in the aforementioned test form and return the result. I have tried two methods so far; both have failed. I will show the two methods, and I hope someone out there knows how to actually do this correctly. ...
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Cast an instance of a class to a @protocol in Objective-C

... edited Mar 21 '17 at 21:08 Alexander Abakumov 9,59199 gold badges6363 silver badges9999 bronze badges answered Nov 26 '10 at 1:47 ...
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What is the difference between a 'closure' and a 'lambda'?

Could someone explain? I understand the basic concepts behind them but I often see them used interchangeably and I get confused. ...
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How to merge a transparent png image with another image using PIL

I have a transparent png image "foo.png" and I've opened another image with 7 Answers ...
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Regular Expression for alphanumeric and underscores

...e to have a regular expression that checks if a string contains only upper and lowercase letters, numbers, and underscores. ...