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Contents
require 'singleton'
module H8
# The class representing undefined in javascript. Singleton
# Nota that H8::Undefined == false but is not FalseClass
class UndefinedClass
include Singleton
def blank?
true
end
def undefined?
true
end
def empty?
true
end
def present?
false
end
def !
true
end
def == x
x.is_a?(H8::UndefinedClass) || x == false
end
end
# The constant representing 'undefined' value in Javascript
# The proper use is to compare returned value res == H8::Undefined
Undefined = UndefinedClass.instance
# Convert javascript 'arguments' object to ruby array
def arguments_to_a args
res = Array.new(l=args.length)
l.times { |n| res[n] = args[n] }
res
end
module_function :arguments_to_a
end
Version data entries
15 entries across 15 versions & 1 rubygems