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22 lines
358 B
22 lines
358 B
13 years ago
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def call_twice
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puts "I'm about to call your block."
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yield
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puts "I'm about to call your block again."
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yield
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end
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call_twice { puts "Hi, I'm a talking code block." }
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def repeat(n)
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if block_given?
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n.times { yield }
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else
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raise ArgumentError.new("I can't repeat a block you don't give me!")
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end
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end
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repeat(4) { puts "Hello." }
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repeat(4)
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