Scala functions and code blocks

a block of code

{exp1;exp2}

{

exp1

exp2

}

A code block is also an expression whose final evaluation is the value of the last expression.

 

two function

def functionName(param:ParamType):ReturnType={

//function body:expressions

}

 

Three examples

1. object func_examples {
2. def hello(name:String):String={
3. s"Hello,${name}"
4. }//> hello: (name: String)String
6. hello("cakin24")//> res0: String = Hello,cakin24
8. def hello2(name:String)={
9. s"Hello,${name}"
10. }//> hello2: (name: String)String
11. hello("cakin24")//> res1: String = Hello,cakin24
13. def Add(x:Int,y:Int)=x+y //> Add: (x: Int, y: Int)Int
14. Add(1,2)//> res2: Int = 3
15. }