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How do I check if an element is really visible with JavaScript? [duplicate]

...rrow) Checking the viewportoffset (prototype native method) Checking the z-index for the "beneath" problem (under Internet Explorer it may be buggy)
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SQL Group By with an Order By

... I don't know about MySQL, but in MS SQL, you can use the column index in the order by clause. I've done this before when doing counts with group bys as it tends to be easier to work with. So SELECT COUNT(id), `Tag` from `images-tags` GROUP BY `Tag` ORDER BY COUNT(id) DESC LIMIT 20 Be...
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What are the most common naming conventions in C?

...tion [optional] very local and temporary variables (such like a for() loop index) And that's it. It gives class MyClass { enum TheEnumeration { FIRST_ELEMENT, SECOND_ELEMENT, } int class_variable; int MyMethod(int first_param, int second_parameter) { in...
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Where am I wrong about my project and these Javascript Frameworks?

...ould allow a top toolbar as well. Ui router tutorial: http://cacodaemon.de/index.php?id=57 WYSIWYG Editor Angular is built on live two-way binding (when you change something somewhere, it automatically changes everywhere else.) Therefore it comes packaged with a lot of features that work well with t...
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Rails raw SQL example

... indices won't cause other performance/resource issues, consider adding an index in the DB for payment_details.created_at and for payment_errors.created_at. If lots of records and not all records need to show up at once, consider using pagination: https://www.ruby-toolbox.com/categories/paginatio...
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jQuery find parent form

... May be we should add getting by index? '$("input[type=submit]").closest("form");' returns an array of forms. – sergzach May 22 '12 at 6:20 ...
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Test if characters are in a string

...only started playing with R about an hour ago), it returns a vector of the indexes that match, rather than a list of matches. But, back to your original question, what we really want is to know whether we found the needle in the haystack, a true/false value. They apparently decided to name this fun...
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How to compare Unicode characters that “look alike”?

...tion : <compat> GREEK SMALL LETTER MU (U+03BC) Mirror : N Index entries : MICRO SIGN Upper case : U+039C Title case : U+039C Version : Unicode 1.1.0 (June, 1993) Name : GREEK SMALL LETTER MU Block : Greek and Coptic Category : ...
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How to lazy load images in ListView in Android

... exception 10-13 09:58:46.768: ERROR/AndroidRuntime(24250): java.lang.ArrayIndexOutOfBoundsException: Array index out of range: 0 10-13 09:58:46.768: ERROR/AndroidRuntime(24250): at java.util.Vector.elementAt(Vector.java:331) 10-13 09:58:46.768: ERROR/AndroidRuntime(24250): at java.util.Vect...
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What is the MySQL VARCHAR max size?

... Using utf8mb4 will put you up against the limit on index width in a situation where utf8 does not. If you examine the character sets that are included in utf8mb4 but not in utf8, you may find that including all of the various forms of hieroglyphics and other such arcane chara...