93 

    94 % Easy installation

    95 %https://alexarchambault.github.io/posts/2020-09-21-cs-setup.html

  1623 \subsection*{Scala Syntax for Java Developers}

  1624 

  1625 Scala compiles to the JVM, like the Java language. Because of this,

  1626 it can re-use many libraries.

  1627 

  1628 \begin{lstlisting}[language=Java]

  1629 Drink coke = getCoke();

  1630 \end{lstlisting}

  1631 

  1632 \begin{lstlisting}[language=Scala]

  1633 val coke : Drink = getCoke()

  1634 \end{lstlisting}

  1635 

  1636 Unit means void:

  1637 

  1638 \begin{lstlisting}[language=Java]

  1639 public void output(String s) {

  1640   System.out.println(s);

  1641 }

  1642 \end{lstlisting}

  1643 

  1644 \begin{lstlisting}[language=Scala]

  1645 def output(s: String): Unit = println(s)

  1646 \end{lstlisting}

  1647 

  1648 

  1649 Type for list of Strings:

  1650 

  1651 \begin{lstlisting}[language=Java]

  1652 List<String>

  1653 \end{lstlisting}

  1654 

  1655 \begin{lstlisting}[language=Scala]

  1656 List[String]

  1657 \end{lstlisting}

  1658 

  1659 String interpolations

  1660 

  1661 \begin{lstlisting}[language=Java]

  1662 System.out.println("Hello, "+ firstName + " "+ lastName + "!");

  1663 \end{lstlisting}

  1664 

  1665 \begin{lstlisting}[language=Scala]

  1666 println(s"Hello, $firstName $lastName!")

  1667 \end{lstlisting}

  1668 

  1669 

  1670 Java provides syntactic sugar when constructing lambda functions:

  1671 

  1672 \begin{lstlisting}[language=Java]

  1673 list.foreach(item -> System.out.println("* " + item));

  1674 \end{lstlisting}

  1675 

  1676 In Scala, we use the => symbol with anonymous functions:

  1677 

  1678 \begin{lstlisting}[language=Scala]

  1679 list.foreach(item => println(s"* $item"))

  1680 \end{lstlisting}

  1681 

  1682 new / vs case classes

  1683