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What is q=0.5 in Accept* HTTP headers?

...y factor. It specifies what language the user would prefer, on a scale of 0 to 1, as can be seen from the HTTP/1.1 Specification, §14.4: Each language-range MAY be given an associated quality value which represents an estimate of the user's preference for the languages specified by that range. Th...
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Add zero-padding to a string

How do I add "0" padding to a string so that my string length is always 4? 5 Answers 5...
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Cron job every three days

Is it possible to run a cronjob every three days? Or maybe 10 times/month. 11 Answers ...
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Add subdomain to localhost URL

...en (as root) the file /etc/hosts and add a line (or lines) like this: 127.0.0.1 example.com 127.0.0.1 subdomain.example.com Your computer will now treat both example.com and subdomain.example.com as belonging to itself. If you visit either in your web browser, they will work the same, in pr...
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Could not locate Gemfile

... answered Jul 25 '10 at 16:40 JoniJoni 2,85733 gold badges2121 silver badges2222 bronze badges ...
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Keep only first n characters in a string?

...r JavaScript's String method substring e.g. 'Hiya how are you'.substring(0,8); Which returns the string starting at the first character and finishing before the 9th character - i.e. 'Hiya how'. substring documentation s...
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How to do exponential and logarithmic curve fitting in Python? I found only polynomial fitting

... 230 For fitting y = A + B log x, just fit y against (log x). >>> x = numpy.array([1, 7, 20...
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How to scale SVG image to fill browser window?

... How about: html, body { margin:0; padding:0; overflow:hidden } svg { position:fixed; top:0; bottom:0; left:0; right:0 } Or: html, body { margin:0; padding:0; overflow:hidden } svg { position:fixed; top:0; left:0; height:100%; width:100% } I have an ex...
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What is the default value for enum variable?

... It is whatever member of the enumeration represents the value 0. Specifically, from the documentation: The default value of an enum E is the value produced by the expression (E)0. As an example, take the following enum: enum E { Foo, Bar, Baz, Quux } Without overriding the ...
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How to track down a “double free or corruption” error

... answered May 25 '10 at 8:42 HasturkunHasturkun 31.2k55 gold badges6565 silver badges9595 bronze badges ...