Extend Float and FixNum to do calculations in S.I. units

jswizard (JavaScript Wizard) — Fri, 04 Aug 2006 19:14:45 GMT

Found at http://stephan.walter.name/Ruby_snippets



module SiUnits

        def mega;  self * 1000.kilo;   end

        def kilo;  self * 1000;        end

        def milli; self * 0.001;       end

        def micro; self * 0.001.milli; end



        def seconds; self;              end

        def minutes; self * 60;         end

        def hours;   self * 60.minutes; end

        def days;    self * 24.hours;   end

        def years;   self * 365.days;   end



        def metres; self; end



        def grams; self * 0.001; end

end



class Float; include SiUnits; end

class Fixnum; include SiUnits; end



p 2.days             # => 172800

p 3.milli.metres     # => 0.003

p 4.kilo.grams       # => 4.0

Note: This code is under the Creative Commons Attribution-NonCommercial-ShareAlike License.

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Extend Float and FixNum to do calculations in S.I. units