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Merge pull request #547 from rostdotio/master

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[scala] Added explanation for colon character
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Nami-Doc 2014-03-09 14:35:36 +01:00
commit dd71873b2d
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@ -104,10 +104,13 @@ val sq = (x:Int) => x * x
sq(10) // Gives you this: res33: Int = 100. sq(10) // Gives you this: res33: Int = 100.
// The colon explicitly defines the type of a value, in this case a function
// taking an Int and returning an Int.
val add10: Int => Int = _ + 10
// Scala allows methods and functions to return, or take as parameters, other // Scala allows methods and functions to return, or take as parameters, other
// functions or methods. // functions or methods.
val add10: Int => Int = _ + 10 // A function taking an Int and returning an Int
List(1, 2, 3) map add10 // List(11, 12, 13) - add10 is applied to each element List(1, 2, 3) map add10 // List(11, 12, 13) - add10 is applied to each element
// Anonymous functions can be used instead of named functions: // Anonymous functions can be used instead of named functions: