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Purpose of asterisk before a CSS property
The following is taken from the Yahoo CSS reset. Can someone please explain the purpose of the asterisks?
6 Answers
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Unix command to find lines common in two files
I'm sure I once found a unix command which could print the common lines from two or more files, does anyone know its name? It was much simpler than diff .
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NSString property: copy or retain?
...ht work for your own strings, but you never know about strings you receive from frameworks.
– Nikolai Ruhe
May 27 '10 at 12:18
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“Notice: Undefined variable”, “Notice: Undefined index”, and “Notice: Undefined offset” using PHP
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Notice: Undefined variable
From the vast wisdom of the PHP Manual:
Relying on the default value of an uninitialized variable is problematic in the case of including one file into another which uses the same variable name. It is also a major securit...
What's the easiest way to escape HTML in Python?
...hat kind of encoding is useless if you just work with unicode all the time from start. Just encode at the end to the encoding specified in the document header (utf-8 for maximum compatibility).
Example:
>>> cgi.escape(u'<a>bá</a>').encode('ascii', 'xmlcharrefreplace')
'&l...
How do you render primitives as wireframes in OpenGL?
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From http://cone3d.gamedev.net/cgi-bin/index.pl?page=tutorials/ogladv/tut5
// Turn on wireframe mode
glPolygonMode(GL_FRONT, GL_LINE);
glPolygonMode(GL_BACK, GL_LINE);
// Draw the box
DrawBox();
// Turn off wireframe mode
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Using tags in the with other HTML
...st (July 2016) read on mozilla dev: "The scoped attribute has been removed from the specification after only limited and experimental adoption by Chrome and Firefox. You should avoid using it, as it will almost certainly be removed from these browsers soon." >> developer.mozilla.org/en-US/doc...
How do I create a file and write to it in Java?
...and often is) used, but is not (conceptually) the right class for the job. From the docs: "PrintWriter prints formatted representations of objects to a text-output stream. " Bozho's answer is more correct, though it looks cumbersome (you can always wrap it in some utility method).
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“unrecognized selector sent to instance” error in Objective-C
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That's a very astute diagnosis from a very few lines of code.
– Michael Morrison
Jul 21 '11 at 3:55
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