Swift Examples

examples/objects/Swift/book.swift

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+
+import Foundation
+
+/// A Book Object that holds the price, author, and title of a book
+class Book {
+
+
+
+    var author : String
+    var title : String
+    var price : Float
+
+    init(author : String, title : String, price : Float=0.00) {
+
+        /**
+            Constructor to build a book object
+
+            - Parameters:
+                - author: The full name of the author of the book
+                - title: The full title of the book
+                - price: The price of the book in dollars and cents (example format ###.##)
+
+        */
+
+        self.author = author
+        self.price = price
+        self.title = title
+
+    }
+
+    func getAuthor() -> String {
+
+        /**
+            Returns the author of the book
+
+            - Returns: The author of the book as a String
+
+        */
+
+
+
+        return self.author
+    }
+
+    func getPrice() -> Float {
+
+        /**
+            Returns the price  of the book
+
+            - Returns: The price  of the book as a Float
+
+        */
+
+        return self.price
+    }
+
+    func getTitle() -> String {
+
+        /**
+            Returns the title of the book to the console
+
+            - Returns: The title of the book
+
+        */
+
+        return self.title
+    }
+
+    func increasePrice(_ increase : Float) -> Bool {
+
+        /**
+            Attempts to increase the price of the book
+
+            - Parameters:
+                - increase: The value to increase the price by. This value can be negative; however, it will never lower the value below zero. If this happens, the function will return false
+
+            - Returns: true  if the method was successful
+            - Returns: false if the method attempted to bring the value below zero
+
+
+
+
+        */
+
+        if (self.price + increase) > 0 {
+            self.price += increase
+            return true
+        }
+
+        return false
+
+    }
+
+}
+
+
+
+

examples/objects/Swift/main.swift

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+
+import Foundation
+
+let bookOne = Book(author: "Terry Pratchett", title: "Guards! Guards!", price: 5.99)
+let bookTwo = Book(author: "Robert Jordan", title: "The Eye of the World", price: 8.99)
+
+print(bookOne.getAuthor())
+print(bookOne.getPrice())
+print(bookOne.getTitle())
+bookOne.increasePrice(1.00)
+print(bookOne.getPrice())
+
+print(bookTwo.getAuthor())
+print(bookTwo.getPrice())
+print(bookTwo.getTitle())
+bookTwo.increasePrice(-6.00)
+print(bookTwo.getPrice())
+
+
+
+
+
+