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Format bytes to kilobytes, megabytes, gigabytes

... size info to kilobytes, megabytes and gigabytes? For instance I have an MP3 that Ubuntu displays as "5.2 MB (5445632 bytes)". How would I display this on a web page as "5.2 MB" AND have files less than one megabyte display as KB and files one gigabyte and above display as GB? ...
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How to show SQL queries run in the Rails console?

... Rails 3+ Enter this line in the console: ActiveRecord::Base.logger = Logger.new(STDOUT) Rails 2 Enter this line in the console: ActiveRecord::Base.connection.instance_variable_set :@logger, Logger.new(STDOUT) ...
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Python Empty Generator Function

... 135 You can use return once in a generator; it stops iteration without yielding anything, and thus ...
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Why modelVersion of pom.xml is necessary and always set to 4.0.0?

... It is always set to 4.0.0 in Maven 2 and 3, because, at present, there is no other model. Notice that modelVersion contains 4.0.0. That is currently the only supported POM version, and is always required. [source] But it wouldn't necessarily need to always be ...
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Get key by value in dictionary

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How to store decimal values in SQL Server?

... | edited Oct 24 '13 at 8:46 answered May 1 '09 at 21:09 ...
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Convert Int to String in Swift

... // Successfully converted String to Int } Or if you're using Swift 2 or 3: let x: Int? = Int(myString) share | improve this answer | follow | ...
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Finding duplicates in O(n) time and O(1) space

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Complex numbers usage in python [closed]

...u can use the type as a constructor if you prefer: >>> complex(2,3) (2+3j) A complex number has some built-in accessors: >>> z = 2+3j >>> z.real 2.0 >>> z.imag 3.0 >>> z.conjugate() (2-3j) Several built-in functions support complex numbers: >&gt...
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Installed Ruby 1.9.3 with RVM but command line doesn't show ruby -v

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