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tpo/autodefine.rb

Last active August 29, 2015 14:00
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define? considered evil
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autodefine.rb
#!/usr/bin/ruby
# tested with ruby 1.9.3p194
puts "this will not print" if defined?(x)
if false
puts "this neither"
x = "foobar"
end
puts "why will x be defined here?" if defined?(x)
# Apparently because a variable gets defined when the
# *parser* sees it and *not* when it's assigned-
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