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module Kernel Ruby♯ = '☠ ☢ ☹' alias λ proc alias ⚠ raise #Arabic-Indic digits #There's some RTL stuff going on here, but they're actually #in the right order %w(١ ٢ ٣ ٤ ٥ ٦ ٧ ٨ ٩).each_with_index do |digit,index| define_method digit do |*nxt| this = index+1 nxt = nxt.empty? ? nil : nxt.first if nxt this * (10 ** (1 + (Math.log10(nxt).floor))) + nxt else this end end end #Roman %w(Ⅰ Ⅴ Ⅹ Ⅼ Ⅽ Ⅾ Ⅿ ↁ ↂ).zip([1,5,10,50,100,500,1000,5000,10000]).each do |numeral,value| define_method numeral do |*nxt| value + nxt.inject(0){|s,n| s+n } end end #Sum args def ∑(*args) args.inject(0){|sum,arg| sum+arg } end #Sq. root def √(n) Math.sqrt(n) end def ∞ 1/0.0 end def π Math::PI end alias ℼ π def Ω 0.5671432904097838729999686622 end def ε Float::EPSILON end def ␀ #NUL nil end def ♻ GC.start end end class Proc alias ❪❫ call end #These probably belong in Set instead of Array class Array alias ∋ include? alias ∩ & alias ∪ | def ∌(element) !include?(element) end def ⊂(array) size < array.size && all?{|e| array.include?(e) } end def ⊅(array) size > array.size && array.all?{|e| include?(e) } end def ⊆(array) all?{|e| array.include?(e) } end def ⊇(array) array.all?{|e| include?(e) } end def ⊄(array) !⊂(array) end def ⊅(array) !⊂(array) end def ⊈(array) !⊆(array) end def ⊉(array) !⊇(array) end def ∑ inject(0){|sum,n| sum+n } end end [Fixnum,Float].each do |klass| klass.class_eval do alias ⩽ <= alias ⩾ >= end end

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