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Contents
module Pione
module Util
module BooleanValue
class << self
# Return boolean value of the object.
#
# @param val [Object]
# target object
# @return [Boolean]
# boolean of the object
def of(val)
case val
when NilClass
false
when TrueClass
true
when FalseClass
false
when String
of_string(val)
when Numeric
of_number(val)
else
raise ArgumentError.new(val)
end
end
private
# Return boolean value of the string. Ignoring letter cases, "true",
# "t", "yes", and "y" are true, and "false", "f", "no", and "n" are
# false. Ohterwise raise `ArgumentError`.
#
# @param val [String]
# the string
# @return [Boolean]
# boolean of the string
def of_string(val)
case val.downcase
when "true", "t", "yes", "y"
true
when "false", "f", "no", "n"
false
else
raise ArgumentError.new(val)
end
end
# Return boolean value of the number. Return true if the number is
# greater than 0.
#
# @param val [Numeric]
# the number
# @return [Boolean]
# boolean of the number
def of_number(val)
val > 0
end
end
end
end
end
Version data entries
6 entries across 6 versions & 1 rubygems