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## Nick's Symbol#to_proc explanation numbers = %w{1.3 1.5 1.8} puts "# 1 - standard stuff" p numbers.map { |x| x.to_f } puts "# 2 - passing in a proc using &" to_f_proc = proc { |x| x.to_f } p numbers.map(&to_f_proc) puts "# 3 - passing in a dynamic proc" def hax_proc method proc { |x| x.send(method) } end p numbers.map(&hax_proc(:to_f)) puts "# 4 - ruby automagically calls to_proc on what's passed in as the block" class ToF def to_proc proc { |x| x.send(:to_f) } end end p numbers.map(&ToF.new) puts "# 5 - monkey patching it onto symbol" class Symbol def to_proc proc { |x| x.send(self) } end end p numbers.map(&:to_f)

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