iskm/learnxinyminutes-docs
1
0
Fork 0
mirror of https://github.com/adambard/learnxinyminutes-docs.git synced 2024-12-23 17:41:41 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Added explanation for colon character

Browse Source 
Use of the colon character for value assignment is now explained by example of function add10.
This commit is contained in:
rostdotio 2014-02-28 10:31:10 +01:00
parent 31b5427774
commit bd6d3be775
1 changed files with 4 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
scala.html.markdown
View File

@ -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: