Tuples - Initial movie review playgrounds

Author: keefmoon

1_BundlingVariablesIntoTuples/MovieReviewNormalisation.playground/Contents.swift

@@ -0,0 +1,21 @@
+
+import Foundation
+
+func normalisedStarRating(forRating rating: Float,
+                          ofPossibleTotal total: Float) -> (Int, String) {
+    
+    let fraction = rating / total
+    let ratingOutOf5 = fraction * 5
+    let roundedRating = round(ratingOutOf5) // Rounds to the nearest integer.
+    let numberOfStars = Int(roundedRating) // Turns a Float into an Int
+    let ratingString = "\(numberOfStars) Star Movie"
+    return (numberOfStars, ratingString)
+}
+
+let ratingValueAndDisplayString = normalisedStarRating(forRating: 5, ofPossibleTotal: 10)
+
+let ratingValue = ratingValueAndDisplayString.0
+print(ratingValue) // 3 - Use to show the right number of stars
+
+let ratingString = ratingValueAndDisplayString.1
+print(ratingString) // "3 Star Movie" - Use to put in the label

1_BundlingVariablesIntoTuples/MovieReviewNormalisation.playground/contents.xcplayground

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<playground version='5.0' target-platform='ios'>
+    <timeline fileName='timeline.xctimeline'/>
+</playground>

1_BundlingVariablesIntoTuples/MovieReviewNormalisationUsingLabels.playground/Contents.swift

@@ -0,0 +1,22 @@
+
+import Foundation
+
+func normalisedStarRating(forRating rating: Float,
+                          ofPossibleTotal total: Float)
+                          -> (starRating: Int, displayString: String) {
+    
+    let fraction = rating / total
+    let ratingOutOf5 = fraction * 5
+    let roundedRating = round(ratingOutOf5) // Rounds to the nearest integer.
+    let numberOfStars = Int(roundedRating) // Turns a Float into an Int
+    let ratingString = "\(numberOfStars) Star Movie"
+    return (starRating: numberOfStars, displayString: ratingString)
+}
+
+let ratingValueAndDisplayString = normalisedStarRating(forRating: 5, ofPossibleTotal: 10)
+
+let ratingValue = ratingValueAndDisplayString.starRating
+print(ratingValue) // 3 - Use to show the right number of stars
+
+let ratingString = ratingValueAndDisplayString.displayString
+print(ratingString) // "3 Star Movie" - Use to put in the label

1_BundlingVariablesIntoTuples/MovieReviewNormalisationUsingLabels.playground/contents.xcplayground

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<playground version='5.0' target-platform='ios'>
+    <timeline fileName='timeline.xctimeline'/>
+</playground>