Internship← Scala Programming learning pathScala Programming · Module 3 of 10
Functions and methods
Functions are first-class values in Scala.
📖 Key ideas
- def add(a: Int, b: Int): Int = a + b defines a method.
- Anonymous functions: (x: Int) => x * 2.
- Functions can be passed to and returned from other functions.
- Default and named arguments make calls clear.
- The last expression is the return value.
💡 Real-life example: Like a recipe card you can photocopy and hand to another cook: the function itself is a value.
defDefines a method
LambdaAn anonymous function
Higher-order functionTakes or returns functions
Named argumentPass an argument by its name