</>SkillRecallRECALL WHAT YOU KNOW
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SwiftIntroduction & Core Concepts

44 items

1

Missing Semicolon on One Line

Code Quiz
2

Missing Type Conversion

Code Quiz
3

Misspelled print Function

Code Quiz
4

Explicit Type Annotation Mismatch

Code Quiz
5

Assignment vs Equality

Code Quiz
6

Reassigning a var Variable

Code Quiz
7

Using an Optional Without Unwrapping

Code Quiz
8

Assigning nil to a Non-Optional

Code Quiz
9

Type Inference Conflict

Code Quiz
10

Broken String Interpolation

Code Quiz
11

Mutating a let Constant

Code Quiz
12

Wrong Type for a Value

Code Quiz
13

Unterminated Block Comment

Code Quiz
14

Arithmetic Across Different Types

Code Quiz
15

Arithmetic Operators

Quiz
16

What Swift Is

Quiz
17

Type Safety in Swift

Quiz
18

Comparison and Logical Operators

Quiz
19

Basic Data Types

Quiz
20

Semicolons in Swift

Quiz
21

let vs var

Quiz
22

Explicit Type Annotations

Quiz
23

Printing with print()

Quiz
24

Type Inference

Quiz
25

Comments in Swift

Quiz
26

Optionals and nil

Quiz
27

String Literals

Quiz
28

String Interpolation

Quiz
29

Swift Design Goals

Flashcard
30

Arithmetic Operators

Flashcard
31

Declaring Constants with let

Flashcard
32

Declaring Variables with var

Flashcard
33

String Interpolation

Flashcard
34

Swift Platforms & Uses

Flashcard
35

Comparison & Logical Operators

Flashcard
36

Naming Conventions

Flashcard
37

Basic Data Types

Flashcard
38

Semicolons in Swift

Flashcard
39

Explicit Type Annotations

Flashcard
40

Type Inference

Flashcard
41

String Literals

Flashcard
42

Comments in Swift

Flashcard
43

Printing Output

Flashcard
44

What Swift Is

Flashcard
Code QuizBeginner

Using an Optional Without Unwrapping

Spot the missing unwrap in this optional usage.

Codeswift
let age: Int? = 30
let nextAge = age + 1
print(nextAge)

What is the bug in this code?