/*
   22c22: Object Oriented Software Development
   Fall 2013
   The University of Iowa
   
   Instructor: Cesare Tinelli
*/

/* Scala examples seen in class */


/* Basic types */

3

3 + 5

4 - 2

3.0

1.4 + 3.0


// implicit conversion

1.4 + 3   // syntactic sugar for 

1.4 + 3.toDouble


"hi"

"hi" ++ " there"


// ill-typed

"hi" ++ 3


"hi" + " there"

// implicit conversion
"high " + 5  // syntactic sugar for 

"high " + 5.toString // functionally equivalent to 

"high " ++ "5"



// implicit conversion and left associativity of +

"hi" + 3.4 + 1  // implicitly converted to 

("hi" + 3.4.toString) + 1.toString


3.4 + 1 + "hi" // implicitly converted to

(3.4 + 1.toDouble).toString + "hi"



true

! true

true && false

true || false


3 == 5-2

3 == 3.0 // implictly converted to 

3.toDouble == 3.0

3 == "3" /** no implicity conversion here! **/


/* tuple types */

(1,3)

(3,4,5)

(3,"pp",4.3)

((1,2),3) == (1,(2,3))  // tuples of different type
((1,2),3) == (1,2,3)    // tuples of different type



/* Unit type */

()

val a = ()