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mizutaki/sinatra_3-19.rb

Created October 15, 2014 12:43
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instance_eval
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sinatra_3-19.rb
array = ['foo', 'bar']
block = proc {first}
block2 = proc {last}
#block.call error undefined local variable or methods
array.instance_eval(&block) #foo
array.instance_eval(&block2) #bar
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