From bd6d3be775fd6be55f92d1d368b303f40618c0e1 Mon Sep 17 00:00:00 2001 From: rostdotio Date: Fri, 28 Feb 2014 10:31:10 +0100 Subject: Added explanation for colon character Use of the colon character for value assignment is now explained by example of function add10. --- scala.html.markdown | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/scala.html.markdown b/scala.html.markdown index 5dfaefe0..2666746e 100644 --- a/scala.html.markdown +++ b/scala.html.markdown @@ -104,10 +104,13 @@ val sq = (x:Int) => x * x 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 // 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 // Anonymous functions can be used instead of named functions: -- cgit v1.2.3