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Why are hexadecimal numbers prefixed with 0x?

Why are hexadecimal numbers prefixed as 0x ? I understand the usage of the prefix but I don't understand the significance of why 0x was chosen. ...
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How to calculate the difference between two dates using PHP?

...rom this it's rather easy to calculate different time periods. $date1 = "2007-03-24"; $date2 = "2009-06-26"; $diff = abs(strtotime($date2) - strtotime($date1)); $years = floor($diff / (365*60*60*24)); $months = floor(($diff - $years * 365*60*60*24) / (30*60*60*24)); $days = floor(($diff - $years ...
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How to position a DIV in a specific coordinates?

... answered Jul 23 '11 at 20:01 Michael BerkowskiMichael Berkowski 246k3636 gold badges408408 silver badges359359 bronze badges ...
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How to sort a list in Scala by two fields?

...g.String) ). – senia Jun 18 '14 at 10:16 5 @SachinK: You could implement customOrdering as Orderi...
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How do I draw a grid onto a plot in Python?

...lot using pylab in Python and now I would like to superimpose a grid of 10x10 onto the scatter plot. How do I do that? 5 ...
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How can I auto increment the C# assembly version via our CI platform (Hudson)?

...ementing assembly version numbers and we frequently ship assemblies with 1.0.0.0 versions. Obviously, this causes a lot of headaches. ...
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what is faster: in_array or isset? [closed]

...t-in function. These can be demonstrated by using an array with values (10,000 in the test below), forcing in_array to do more searching. isset: 0.009623 in_array: 1.738441 This builds on Jason's benchmark by filling in some random values and occasionally finding a value that exists in the a...
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How best to include other scripts?

... one another. That way I can use dirname: #!/bin/sh my_dir="$(dirname "$0")" "$my_dir/other_script.sh" share | improve this answer | follow | ...
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How to remove all leading zeroes in a string

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Simplest code for array intersection in javascript

... Ry-♦ 192k4444 gold badges392392 silver badges403403 bronze badges answered Dec 11 '09 at 3:08 Anon.Anon. 49.5k88 gold badges...