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CSS horizontal centering of a fixed div?

... left: 50%; margin-left: -400px; /* Half of the width */ share | improve this answer | follow ...
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Is there any difference between __DIR__ and dirname(__FILE__) in PHP?

...ve a trailing slash unless it is the root directory. (Added in PHP 5.3.0.) share | improve this answer | follow | ...
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Return number of rows affected by UPDATE statements

...ber of rows affected by an UPDATE query in a Stored Procedure (SQL Server 2005), as a resultset. e.g. 3 Answers ...
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What does %~dp0 mean, and how does it work?

I find %~dp0 very useful, and I use it a lot to make my batch files more portable. 7 Answers ...
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Why is DarkGray lighter than Gray?

...r to "Silver". However, the W3C defined Gray (more appropriately?) as RGB 50%. Here's some more Wikipedia on the subject: Perhaps most unusual of the color clashes between X11 and W3C is the case of "Gray" and its variants. In HTML, "Gray" is specifically reserved for the 128 triplet (50% g...
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What's the difference between eval, exec, and compile?

... as an expression, so it really does not return anything). In versions 1.0 - 2.7, exec was a statement, because CPython needed to produce a different kind of code object for functions that used exec for its side effects inside the function. In Python 3, exec is a function; its use has no effect ...
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How to make Scroll From Source feature always enabled?

... chalimartineschalimartines 5,31222 gold badges2020 silver badges3232 bronze badges 5 ...
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Why does Python print unicode characters when the default encoding is ASCII?

... 104 Thanks to bits and pieces from various replies, I think we can stitch up an explanation. By t...
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creating list of objects in Javascript

... var list = [ { date: '12/1/2011', reading: 3, id: 20055 }, { date: '13/1/2011', reading: 5, id: 20053 }, { date: '14/1/2011', reading: 6, id: 45652 } ]; and then access it: alert(list[1].date); ...
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Invoke a callback at the end of a transition

...milar to jQuery) using D3.js . What I need to do is to set the opacity to 0 using transition() . 9 Answers ...