brew/Library/Homebrew/extend/symbol.rb

class Symbol
  def to_proc
    proc { |*args| args.shift.send(self, *args) }
  end unless method_defined?(:to_proc)
end
Define Symbol#to_proc for Ruby 1.8.6 Ruby 1.8.6 doesn't have Symbol#to_proc, which allows things like map(&:to_s) rather than map { \|o\| o.to_s }. 1.8.7 does, though, and since it is used in a bunch of the superenv code we should attempt to keep it compatible with 1.8.6. Closes Homebrew/homebrew#16046. 2013-01-09 17:36:17 -06:00			`class Symbol`
			`def to_proc`
Symbol#to_proc: fix with arrays of arrays Previously, with nested arrays, the Symbol#to_proc would iterate over the first item in the nested array instead of the array itself, e.g.: [[1,2], [3,4]].map(&:first) #=> NoMethodError: undefined method `first' for 1:Fixnum 2014-03-08 10:37:58 -08:00			`proc { \|args\| args.shift.send(self, args) }`
Define Symbol#to_proc for Ruby 1.8.6 Ruby 1.8.6 doesn't have Symbol#to_proc, which allows things like map(&:to_s) rather than map { \|o\| o.to_s }. 1.8.7 does, though, and since it is used in a bunch of the superenv code we should attempt to keep it compatible with 1.8.6. Closes Homebrew/homebrew#16046. 2013-01-09 17:36:17 -06:00			`end unless method_defined?(:to_proc)`
			`end`