Scala - Core Scala - Working with Data: Literals, Values, Variables, and Types(Centigrade-to-Fahrenheit conversion, Int, Double)

Learning Scala:
Practical Functional Programming for the JVM
(O'Reilly Media)
Jason Swartz (著)

開発環境

• OS X Yosemite - Apple (OS)
• Emacs (Text Editor)
• Scala (プログラミング言語)

Learning Scala: Practical Functional Programming for the JVM (Jason Swartz (著)、O'Reilly Media)のPart Ⅰ. (Core Scala)、Chapter 2.(Working with Data: Literals, Values, Variables, and Types)、Exercises 1, 2.(No. 693)を解いてみる。

その他参考書籍

• Programming Scala: Scalability = Functional Programming + Objects

Exercises 1, 2.(No. 693)

入出力結果(Terminal, REPL(Read, Eval, Print, Loop))

$ scala-2.11 
Welcome to Scala version 2.11.6 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_25).
Type in expressions to have them evaluated.
Type :help for more information.

scala> val x = 20 // Int
x: Int = 20

scala> val f1 = x * 9 // Int
f1: Int = 180

scala> val f2 = f1 / 5 // Int
f2: Int = 36

scala> val f3 = f2 + 32 // Int
f3: Int = 68

scala> val y = 21 // Int
y: Int = 21

scala> val f4 = y * 9 // Int
f4: Int = 189

scala> val f5 = f4 / 5 // Int
f5: Int = 37

scala> val f6 = f5 + 32 // Int
f6: Int = 69

scala> val z = 20 // Int
z: Int = 20

scala> val f7 = z * 9 // Int
f7: Int = 180

scala> val f8 = f7 / 5.0 // Double
f8: Double = 36.0

scala> val f9 = f8 + 32 // Double
f9: Double = 68.0

scala> :q
$