Created
January 22, 2011 16:35
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lambdas (anonymous functions) in scala
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| val nums = List(10,21,23,35,40) | |
| //signature of filter: def filter (p: (A) ⇒ Boolean) : Seq[A] | |
| nums.filter(_ > 25) //List(35, 40) | |
| nums.filter((x: Int) => (x % 5) == 0) //List(10,35,40) | |
| def even(x: Int) = (x % 2) == 0 | |
| nums.filter(even) //List(10,40) | |
| nums.map(_ * 10) //List(100,210,230,350,400) | |
| nums.mkString("-") // 10-21-23-35-40 |
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