jc zulian
Posts: 1
Nickname: jc24
Registered: Dec, 2007
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Error in chapter 8 p.158
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Posted: Jan 3, 2008 5:35 AM
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In section 8.5 towards the end of the page you write :
scala> def twice(op: Double => Double, x: Double) = op(op(x))
twice: ((Double) => Double,Double)Double
scala> twice(_ + 1, 5)
res24: Double = 7.0
The type of op in this example is double => double, which means it is a closure that takes one double as an argument and returns another closure.
Unless I am mistaken it should be :
[..], which means it is a closure that takes one double as an argument and returns another double.
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