franklinchou

scala> import shapeless._, record._
import shapeless._
import record._

scala> case class Person(name: String, address: String, age: Int)
defined class Person

scala> val joe = Person("Joe", "Brighton", 33)
joe: Person = Person(Joe,Brighton,33)

franklinchou

Scala: Type Families, Sealed Traits, and Exhaustive Pattern Matching

By: Matt Barackman

What is a Type Family?

A collection of objects or case classes that share a sealed trait.

In the example below, the type family would be a collection of traffic light colors with Red, Yellow, and Green as member objects.

franklinchou

def traverse_backward():
    def recurse(i):
        if i == 0:
            return
        recurse(i - 1)
        print(i)
    recurse(5)


def traverse_forward():

franklinchou

"""
"Write a program that prints the numbers from 1 to 100. But for multiples of three print "Fizz" instead of
the number and for the multiples of five print "Buzz". For numbers which are multiples of both three and five
print "FizzBuzz".
"""

if __name__ == "__main__":
    for index in range(1, 100 + 1):
        if (index % 3 == 0):
            print("Fizz")

franklinchou

import java.time.LocalDate
import java.time.TemporalAdjusters

import scala.util.{Success, Failure, Try}

import org.scalatest.FunSpec

/**
  * Check if date passed is the last day of the month.
  */