Completed 100 Days of Swift - Day #3

100DaysOfSwift/Day1/README.md

@@ -2,7 +2,7 @@
 
 ---
 
-**What I learned**
+**What I learned about**
 
 - **[Variables](/100DaysOfSwift/Day1/Variables.swift)**
 - **[Strings & Integers](/100DaysOfSwift/Day1/Strings%20%26%20Integers.swift)**

100DaysOfSwift/Day2/README.md

@@ -2,7 +2,7 @@
 
 ---
 
-**What I learned**
+**What I learned about**
 
 - **[Arrays](/100DaysOfSwift/Day2/Arrays.swift)**
 - **[Sets](/100DaysOfSwift/Day2/Sets.swift)**

100DaysOfSwift/Day3/Arithmetic operators.swift

@@ -0,0 +1,13 @@
+// Arithmetic operators
+// https://www.hackingwithswift.com/sixty/3/1/arithmetic-operators
+
+let firstScore = 12
+let secondScore = 4
+
+let total = firstScore + secondScore
+let difference = firstScore - secondScore
+
+let product = firstScore * secondScore
+let divided = firstScore / secondScore
+
+let remainder = 13 % secondScore

100DaysOfSwift/Day3/Combining conditions.swift

@@ -0,0 +1,13 @@
+// Combining conditions
+// https://www.hackingwithswift.com/sixty/3/6/combining-conditions
+
+let age1 = 12
+let age2 = 21
+
+if age1 > 18 && age2 > 18 {
+    print("Both are over 18")
+}
+
+if age1 > 18 || age2 > 18 {
+    print("At least one is over 18")
+}

100DaysOfSwift/Day3/Comparison operators.swift

@@ -0,0 +1,16 @@
+// Comparison operators
+// https://www.hackingwithswift.com/sixty/3/4/comparison-operators
+
+let firstScore = 6
+let secondScore = 4
+
+// There are two operators that check for equality: == checks two values are the same, and != (pronounced “not equals”) checks two values are not the same:
+firstScore == secondScore
+firstScore != secondScore
+
+// There are four operators for comparing whether one value is greater than, less than, or equal to another. These are just like in mathematics:
+firstScore < secondScore
+firstScore >= secondScore
+
+// Each of these also work with strings, because strings have a natural alphabetical order:
+"Taylor" <= "Swift"

100DaysOfSwift/Day3/Compound assignment operators.swift

@@ -0,0 +1,8 @@
+// Compound assignment operators
+// https://www.hackingwithswift.com/sixty/3/3/compound-assignment-operators
+
+var score = 95
+score -= 5
+
+var quote = "The rain in Spain falls mainly on the "
+quote += "Spaniards"

100DaysOfSwift/Day3/Conditions.swift

@@ -0,0 +1,27 @@
+// Conditions
+// https://www.hackingwithswift.com/sixty/3/5/conditions
+
+let firstCard = 11
+let secondCard = 10
+
+/*
+if firstCard + secondCard == 21 {
+    print("Blackjack!")
+}
+*/
+
+/*
+if firstCard + secondCard == 21 {
+    print("Blackjack!")
+} else {
+    print("Regular cards")
+}
+*/
+
+if firstCard + secondCard == 2 {
+    print("Aces – lucky!")
+} else if firstCard + secondCard == 21 {
+    print("Blackjack!")
+} else {
+    print("Regular cards")
+}

100DaysOfSwift/Day3/Operator overloading.swift

@@ -0,0 +1,12 @@
+// Operator overloading
+// https://www.hackingwithswift.com/sixty/3/2/operator-overloading
+
+let meaningOfLife = 42
+let doubleMeaning = 42 + 42
+
+let fakers = "Fakers gonna "
+let action = fakers + "fake"
+
+let firstHalf = ["John", "Paul"]
+let secondHalf = ["George", "Ringo"]
+let beatles = firstHalf + secondHalf

100DaysOfSwift/Day3/README.md

@@ -0,0 +1,15 @@
+# Day #3
+
+---
+
+**What I learned about**
+
+- **[Arithmetic operators](/100DaysOfSwift/Day3/Arithmetic%20operators.swift)**
+- **[Operator overloading](/100DaysOfSwift/Day3/Operator%20overloading.swift)**
+- **[Compound assignment operators](/100DaysOfSwift/Day3/Compound%20assignment%20operators.swift)**
+- **[Comparison operators](/100DaysOfSwift/Day3/Comparison%20operators.swift)**
+- **[Conditions](/100DaysOfSwift/Day3/Conditions.swift)**
+- **[Combining conditions](/100DaysOfSwift/Day3/Combining%20conditions.swift)**
+- **[The ternary operator](/100DaysOfSwift/Day3/The%20ternary%20operator.swift)**
+- \*\*[Switch statements](/100DaysOfSwift/Day3/Switch%20statements.swift)
+- **[Range operators](/100DaysOfSwift/Day3/Range%20operators.swift)**

100DaysOfSwift/Day3/Range operators.swift

@@ -0,0 +1,13 @@
+// Range operators
+// https://www.hackingwithswift.com/sixty/3/9/range-operators
+
+let score = 85
+
+switch score {
+case 0..<50:
+    print("You failed badly.")
+case 50..<85:
+    print("You did OK.")
+default:
+    print("You did great!")
+}

100DaysOfSwift/Day3/Switch statements.swift

@@ -0,0 +1,29 @@
+// Switch statements
+// https://www.hackingwithswift.com/sixty/3/8/switch-statements
+
+let weather = "sunny"
+
+/*
+switch weather {
+case "rain":
+    print("Bring an umbrella")
+case "snow":
+    print("Wrap up warm")
+case "sunny":
+    print("Wear sunscreen")
+default:
+    print("Enjoy your day!")
+}
+*/
+
+switch weather {
+case "rain":
+    print("Bring an umbrella")
+case "snow":
+    print("Wrap up warm")
+case "sunny":
+    print("Wear sunscreen")
+    fallthrough
+default:
+    print("Enjoy your day!")
+}

100DaysOfSwift/Day3/The ternary operator.swift

@@ -0,0 +1,16 @@
+// The ternary operator
+// https://www.hackingwithswift.com/sixty/3/7/the-ternary-operator
+
+// Swift has a rarely used operator called the ternary operator. It works with three values at once, which is where its name comes from: it checks a condition specified in the first value, and if it’s true returns the second value, but if it’s false returns the third value. The ternary operator is a condition plus true or false blocks all in one, split up by a question mark and a colon
+
+let firstCard = 11
+let secondCard = 10
+print(firstCard == secondCard ? "Cards are the same" : "Cards are different")
+
+// Regular operator version.
+
+if firstCard == secondCard {
+    print("Cards are the same")
+} else {
+    print("Cards are different")
+}

100DaysOfSwift/README.md

@@ -11,4 +11,5 @@
 **Days 1-12: Introduction to Swift**
 
 - **[Day #1](/100DaysOfSwift/Day1/)** - variables, simple data types, and string interpolation
-- **[Day #2](/100DaysOfSwift/Day2/)** - arrays, dictionaries, sets, and enums
+- **[Day #2](/100DaysOfSwift/Day2/)** - arrays, dictionaries, sets, and enums
+- **[Day #3](/100DaysOfSwift/Day3/)** - operators and conditions