01 Scala Principles 01 Session 03 Functions Exercise

In this small exercise you will extend functions and use extensively if-else expressions.

If-Else-Expressions

Scala's if-else expression is similar to Java's condition expresion: "condition ? if-value : else-value"

Calculator: Signum

Extend the calculator with a signum operator

Boolean inverter

Use if-else to convert a boolean input

Boolean operations

Use if-else to implement these boolean operations: and, or, negate

Resources

if-else expression

• Define some functions: http://www.artima.com/pins1ed/first-steps-in-scala.html#step3
• Scala if then else syntax: http://alvinalexander.com/scala/scala-if-then-else-syntax-returning-value-functional-programming