Limitations and best practices in Swift - Mini Project: Build & Apply

Understanding Limitations and Best Practices in Swift

📖 Scenario: You are building a simple Swift program to manage a list of tasks. You will learn about some common limitations in Swift programming and best practices to write clean, safe, and efficient code.

🎯 Goal: Create a Swift program that stores tasks, limits the number of tasks, and prints them following best practices.

📋 What You'll Learn

Create an array to hold task names

Set a maximum number of tasks allowed

Add tasks only if the limit is not exceeded

Print all tasks clearly

💡 Why This Matters

🌍 Real World

Managing tasks is a common need in apps like to-do lists, reminders, and project planners. Limiting tasks helps keep the app organized and prevents overload.

💼 Career

Understanding how to manage collections, use constants, write functions, and apply conditions are fundamental skills for any Swift developer working on real-world applications.

1

Create the initial task list

Create an empty array called tasks of type String to hold task names.

Swift

var tasks: [String] = []
// Your code here

Need a hint?

Use var to create a variable array of strings.

2

Set a maximum task limit

Create a constant called maxTasks and set it to 5 to limit the number of tasks.

Swift

var tasks: [String] = []
let maxTasks = 5
// Your code here

Need a hint?

Use let to create a constant for the maximum number of tasks.

3

Add tasks with limit check

Write a function called addTask that takes a String parameter task. Inside the function, add the task to tasks only if the number of tasks is less than maxTasks. Otherwise, print "Task limit reached".

Swift

var tasks: [String] = []
let maxTasks = 5

func addTask(task: String) {
    // Your code here
}

Need a hint?

Use if to check the count of tasks before adding.

4

Print all tasks

Use a for loop with variable task to iterate over tasks and print each task.

Swift

var tasks: [String] = []
let maxTasks = 5

func addTask(task: String) {
    if tasks.count < maxTasks {
        tasks.append(task)
    } else {
        print("Task limit reached")
    }
}

addTask(task: "Buy groceries")
addTask(task: "Walk the dog")
addTask(task: "Read a book")
addTask(task: "Write code")
addTask(task: "Exercise")
addTask(task: "Call a friend")

for task in tasks {
    // Your code here
}

Need a hint?

Use print(task) inside the loop to show each task.