Stride for custom step in Swift - Mini Project: Build & Apply

Using Stride for Custom Step in Swift

📖 Scenario: You are organizing a small event and want to print the timeslots available every 15 minutes from 9:00 AM to 10:00 AM.

🎯 Goal: Build a Swift program that uses stride(from:to:by:) to generate timeslots with a custom step of 15 minutes and print them.

📋 What You'll Learn

Create a variable called startTime with the value 9.0 representing 9:00 AM

Create a variable called endTime with the value 10.0 representing 10:00 AM

Create a variable called step with the value 0.25 representing 15 minutes (quarter of an hour)

Use stride(from:to:by:) with startTime, endTime, and step to loop through the timeslots

Print each timeslot in the format "Time slot: X" where X is the current time

💡 Why This Matters

🌍 Real World

Scheduling events or appointments often requires generating timeslots with specific intervals.

💼 Career

Understanding how to use stride helps in tasks like calendar apps, timers, and any time-based data processing.

1

Create start and end time variables

Create a variable called startTime and set it to 9.0. Also create a variable called endTime and set it to 10.0.

Swift

# Create 'startTime' and 'endTime' variables
# Your code here

Need a hint?

Use let to create constants for startTime and endTime.

2

Create step variable for 15 minutes

Create a variable called step and set it to 0.25 to represent 15 minutes as a fraction of an hour.

Swift

let startTime = 9.0
let endTime = 10.0
# Create 'step' variable for 15 minutes
# Your code here

Need a hint?

Remember 15 minutes is one quarter of an hour, so use 0.25.

3

Use stride to loop through timeslots

Use stride(from:to:by:) with startTime, endTime, and step to loop through the timeslots. Use a for loop with variable time.

Swift

let startTime = 9.0
let endTime = 10.0
let step = 0.25
# Use stride to loop through timeslots
# Your code here

Need a hint?

Use for time in stride(from: startTime, to: endTime, by: step) to loop.

4

Print each timeslot

Inside the for loop, print the current time using print("Time slot: \(time)").

Swift

let startTime = 9.0
let endTime = 10.0
let step = 0.25

for time in stride(from: startTime, to: endTime, by: step) {
    # Print the current time slot
    # Your code here
}

Need a hint?

Use print("Time slot: \(time)") inside the loop to show each time.