2011-10-07 01:50:45 +00:00
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[1, 2, 3].each { |i| puts i }
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[1, 2, 3].each do |i|
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if i % 2 == 0
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puts "#{i} is even."
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else
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puts "#{i} is odd."
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end
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end
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1.upto 3 do |x|
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puts x
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end
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1.upto(3) { |x| puts x }
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2011-10-07 01:56:49 +00:00
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hello = lambda { "Hello" }
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hello.call
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log = lambda { |str| puts "[LOG] #{str}" }
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log.call("A test log message.")
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{1=>2, 2=>4}.each { |k,v| puts "Key #{k}, value #{v}" }
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def times_n(n)
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lambda { |x| x * n }
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end
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times_ten = times_n(10)
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puts times_ten.call(5)
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puts times_ten.call(1.25)
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circumference = times_n(2*Math::PI)
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puts circumference.call(10)
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puts circumference.call(3)
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puts [1, 2, 3].collect(&circumference)
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ceiling = 50
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puts [1, 10, 49, 50.1, 200].select { |x| x < ceiling }
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