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Can I use non existing CSS classes?

...has a dependency on the other. Instead, they both refer to the markup (or, more precisely, its DOM representation). This principle applies even if you're using JavaScript to apply styles, as you're doing in your jQuery one-liner. When you write a CSS rule with a class selector, all you're saying is...
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How to delete an old/unused Data Model Version in Xcode

...w Package Contents) Delete the .xcdatamodel file(s) that you don't want anymore Re-add the .xcdatamodeld file to your project This eliminates the need to manually modify any of the project metadata files. share | ...
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Remove CSS “top” and “left” attributes with jQuery

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How do I use 'git reset --hard HEAD' to revert to a previous commit? [duplicate]

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Add new item in existing array in c#.net

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What is Cache-Control: private?

...80403T192837 Any web-site written after 1998 should not use Expires anymore, and instead use max-age. What is ETag? ETag is similar to Last-Modified, except that it doesn't have to be a date - it just has to be a something. If I'm pulling a list of products out of a database, the server can ...
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Is it possible to add dynamically named properties to JavaScript object?

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Use cases for the 'setdefault' dict method

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Difference between map and collect in Ruby?

... Ruby provides an alias for programmers from the Smalltalk world to feel more at home. Why is there a different implementation for arrays and enums? An enum is a generalized iteration structure, which means that there is no way in which Ruby can predict what the next element can be (you can def...
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What is the proper way to check for null values?

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