class Alchemist::ConversionTable
Public Instance Methods
load_all(yaml_file)
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# File lib/alchemist/conversion_table.rb, line 6 def load_all(yaml_file) begin YAML.load_file(yaml_file).merge(proc_based) rescue Psych::SyntaxError, Errno::ENOENT nil end end
Private Instance Methods
celsius_conversion()
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# File lib/alchemist/conversion_table.rb, line 53 def celsius_conversion [to_celsius, from_celsius] end
fahrenheit_conversion()
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# File lib/alchemist/conversion_table.rb, line 65 def fahrenheit_conversion [to_fahrenheit, from_fahrenheit] end
from_celsius()
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# File lib/alchemist/conversion_table.rb, line 49 def from_celsius lambda{ |t| t - 273.15 } end
from_fahrenheit()
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# File lib/alchemist/conversion_table.rb, line 61 def from_fahrenheit lambda{ |t| (t - 273.15) * (9.0/5.0) + 32.0 } end
proc_based()
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# File lib/alchemist/conversion_table.rb, line 16 def proc_based { :density => { :specific_gravity => 1, :sg => 1, :brix => [lambda{ |d| -261.3 / (d - 261.3) }, lambda{ |d| 261.3 - (261.3 / d) }], :plato => [lambda{ |d| -260.0 / (d - 260.0) }, lambda{ |d| 260.0 - (260.0 / d) }], :baume => [lambda{ |d| -145.0 / (d - 145.0) }, lambda{ |d| 145.0 - (145.0 / d) }] }, :temperature => temperature } end
temperature()
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# File lib/alchemist/conversion_table.rb, line 28 def temperature { :kelvin => 1.0, :K => 1.0, :celsius => celsius_conversion, :centrigrade => celsius_conversion, :degree_celsius => celsius_conversion, :degree_centrigrade => celsius_conversion, :degrees_celsius => celsius_conversion, :degrees_centrigrade => celsius_conversion, :fahrenheit => fahrenheit_conversion, :degree_fahrenheit => fahrenheit_conversion, :degrees_fahrenheit => fahrenheit_conversion, :rankine => 1.8, :rankines => 1.8 } end
to_celsius()
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# File lib/alchemist/conversion_table.rb, line 45 def to_celsius lambda{ |t| t + 273.15 } end
to_fahrenheit()
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# File lib/alchemist/conversion_table.rb, line 57 def to_fahrenheit lambda{ |t| (t - 32.0) * (5.0/9.0) + 273.15 } end