Completed 100 Days of Swift - Day #2

100DaysOfSwift/Day1/Constants.swift

@@ -1,3 +1,4 @@
 // Constants
+// https://www.hackingwithswift.com/sixty/1/6/constants
 
 let taylor = "swift"

100DaysOfSwift/Day1/Doubles & Booleans.swift

@@ -1,4 +1,5 @@
 // Doubles & Booleans
+// https://www.hackingwithswift.com/sixty/1/4/doubles-and-booleans
 
 var pi = 3.141 // This is a double
 var awesome = true // This is a boolean

100DaysOfSwift/Day1/Multi-line Strings.swift

@@ -1,4 +1,5 @@
 // Multi-line strings
+// https://www.hackingwithswift.com/sixty/1/3/multi-line-strings
 
 var str1 = """
 This goes

100DaysOfSwift/Day1/String Interpolation.swift

@@ -1,4 +1,5 @@
 // String Interpolation
+// https://www.hackingwithswift.com/sixty/1/5/string-interpolation
 
 var score = 85
 var str = "Your score was \(score)"

100DaysOfSwift/Day1/Strings & Integers.swift

@@ -1,4 +1,5 @@
 // Strings & Integers
+// https://www.hackingwithswift.com/sixty/1/2/strings-and-integers
 
 var str = "Hello, World!"
 var age = 38

100DaysOfSwift/Day1/Type Annotations.swift

@@ -1,4 +1,5 @@
 // Type Annotations
+// https://www.hackingwithswift.com/sixty/1/7/type-annotations
 
 let str = "Hello, World!"
 let album: String = "Reputation"

100DaysOfSwift/Day1/Variables.swift

@@ -1,4 +1,5 @@
 // Variables
+// https://www.hackingwithswift.com/sixty/1/1/variables
 
 var str = "Hello, World!"
 str = "Goodbye"

100DaysOfSwift/Day2/Arrays vs sets vs tuples.swift

@@ -0,0 +1,11 @@
+// Arrays vs sets vs tuples
+// https://www.hackingwithswift.com/sixty/2/4/arrays-vs-sets-vs-tuples
+
+// If you need a specific, fixed collection of related values where each item has a precise position or name, you should use a tuple:
+let address = (house: 555, street: "Taylor Swift Avenue", city: "Nashville")
+
+// If you need a collection of values that must be unique or you need to be able to check whether a specific item is in there extremely quickly, you should use a set:
+let set = Set(["aardvark", "astronaut", "azalea"])
+
+// If you need a collection of values that can contain duplicates, or the order of your items matters, you should use an array:
+let pythons = ["Eric", "Graham", "John", "Michael", "Terry", "Terry"]

100DaysOfSwift/Day2/Arrays.swift

@@ -0,0 +1,10 @@
+// Arrays
+// https://www.hackingwithswift.com/sixty/2/1/arrays
+
+let john = "John Lennon"
+let paul = "Paul McCartney"
+let george = "George Harrison"
+let ringo = "Ringo Starr"
+
+let beatles = [john, paul, george, ringo]
+beatles[1]

100DaysOfSwift/Day2/Creating empty collections.swift

@@ -0,0 +1,21 @@
+// Creating empty collections
+// https://www.hackingwithswift.com/sixty/2/7/creating-empty-collections
+
+// If you want to create an empty collection just write its type followed by opening and closing parentheses. For example, we can create an empty dictionary with strings for keys and values like this:
+var teams = [String: String]()
+
+// We can then add entries later on, like this:
+teams["Paul"] = "Red"
+
+// Similarly, you can create an empty array to store integers like this:
+var results = [Int]()
+
+// The exception is creating an empty set, which is done differently:
+var words = Set<String>()
+var numbers = Set<Int>()
+
+// This is because Swift has special syntax only for dictionaries and arrays; other types must use angle bracket syntax like sets.
+
+// If you wanted, you could create arrays and dictionaries with similar syntax:
+var scores = Dictionary<String, Int>()
+var results = Array<Int>()

100DaysOfSwift/Day2/Dictionaries.swift

@@ -0,0 +1,11 @@
+// Dictionaries
+// https://www.hackingwithswift.com/sixty/2/5/dictionaries
+
+// Dictionaries are collections of values just like arrays, but rather than storing things with an integer position you can access them using anything you want.
+
+let heights = [
+    "Taylor Swift": 1.78,
+    "Ed Sheeran": 1.73
+]
+
+heights["Taylor Swift"] // Access value of "Taylor Swift" which is 1.78

100DaysOfSwift/Day2/Dictionary default values.swift

@@ -0,0 +1,10 @@
+// Dictionary default values
+// https://www.hackingwithswift.com/sixty/2/6/dictionary-default-values
+
+let favoriteIceCream = [
+    "Paul": "Chocolate",
+    "Sophie": "Vanilla"
+]
+
+favoriteIceCream["Paul"]
+favoriteIceCream["Charlotte", default: "Unknown"]

100DaysOfSwift/Day2/Enum associated values.swift

@@ -0,0 +1,11 @@
+// Enum associated values
+// https://www.hackingwithswift.com/sixty/2/9/enum-associated-values
+
+enum Activity {
+    case bored
+    case running(destination: String)
+    case talking(topic: String)
+    case singing(volume: Int)
+}
+
+let talking = Activity.talking(topic: "football")

100DaysOfSwift/Day2/Enum raw values.swift

@@ -0,0 +1,18 @@
+// Enum raw values
+// https://www.hackingwithswift.com/sixty/2/10/enum-raw-values
+
+enum Planet: Int {
+    case mercury
+    case venus
+    case earth
+    case mars
+}
+
+let earth = Planet(rawValue: 2)
+
+// enum Planet: Int {
+//     case mercury = 1
+//     case venus
+//     case earth
+//     case mars
+// }

100DaysOfSwift/Day2/Enumerations.swift

@@ -0,0 +1,14 @@
+// Enumerations aka enums
+// https://www.hackingwithswift.com/sixty/2/8/enumerations
+// A way of defining groups of related values in a way that makes them easier to use.
+
+let result = "failure"
+let result2 = "failed"
+let result3 = "fail"
+
+enum Result {
+    case success
+    case failure
+}
+
+let result4 = Result.failure

100DaysOfSwift/Day2/README.md

@@ -0,0 +1,14 @@
+# Day #2
+
+---
+
+**What I learned**
+
+- **[Arrays](/100DaysOfSwift/Day2/Arrays.swift)**
+- **[Sets](/100DaysOfSwift/Day2/Sets.swift)**
+- **[Tuples](/100DaysOfSwift/Day2/Tuples.swift)**
+- **[Arrays vs sets vs tuples](/100DaysOfSwift/Day2/Arrays%20vs%20sets%20vs%20tuples)**
+- **[Dictionaries](/100DaysOfSwift/Day2/Dictionaries.swift)**
+- **[Dictionary default values](/100DaysOfSwift/Day2/Dictionary%20default%20values)**
+- **[Creating empty collections](/100DaysOfSwift/Day2/Creating%20empty%20collections.swift)**
+- **[Enumerations](/100DaysOfSwift/Day2/Enumerations.swift)**

100DaysOfSwift/Day2/Sets.swift

@@ -0,0 +1,5 @@
+// Sets
+// https://www.hackingwithswift.com/sixty/2/2/sets
+
+let colors = Set(["red", "green", "blue"]) // Sets can be created from arrays.
+let colors2 = Set(["red", "green", "blue", "red", "blue"] // Sets can't have duplicate items. They would just get ignored.

100DaysOfSwift/Day2/Tuples.swift

@@ -0,0 +1,6 @@
+// Tuples
+// https://www.hackingwithswift.com/sixty/2/3/tuples
+
+var name = (first: "Taylor", last: "Swift")
+name.0
+name.first

100DaysOfSwift/README.md

@@ -5,3 +5,8 @@
 **This folder is for the [100 Days of Swift](https://www.hackingwithswift.com/100) challenge.**
 
 **NOTE:** This is **[100 Days of Swift](https://www.hackingwithswift.com/100)**, not **[100 Days of SwiftUI](https://www.hackingwithswift.com/100/swiftui)** which is located [here](/100DaysOfSwiftUI/)
+
+---
+
+- **[Day #1](/100DaysOfSwift/Day1/)**
+- **[Day #2](/100DaysOfSwift/Day2/)**