My First Swift Function
- What is a function? Block of code that you use again and again.
- What is input parameters?
- What is an argument?
Let's create a function:
func printAHaiku() //Function name be descriptive!!
{ print(" Input and output,") print(" This function needs neither one") print(" To print a haiku") }
- Let's use for loop and run it 3 times
- func invite(guest: String) // ALWAYS use declare data type in function. NO INFERENCE!
- guest = argument label
- Let's write an invitation function:
----
Dear [],
I would love for you to come to my party this Saturday at 6PM.
Love,
Banana
----
- Now let's invite all friends:
func invite(guest: String) {
print("Dear \(guest),")
print("I would love for you to come to my party.")
print("Love, \nBanana")
print("\n \n")
}
func invite(allGuests: [String]) {
for guest in allGuests {
invite(guest:guest)
}
}
var friends = ["Natalie", "Megan", "Stehanie", "Jolene", "Bao", "Ashton", "Nhi"]
invite(guest: "Megan")
invite(allGuests: friends)
---
Homework:
Imagine your party is coming FAST and you need to send a message to your friends.
If rsvp, say,
Dear [name],
I am excited to see you!
Love, Banana
if not rsvp, say
Dear [name]
Please reply by tomorrow!
Love, Banana
Requirements:
- Create a function named sendMessage that takes 2 parameters:
1. Name (use String type)
2. A boolean value
- The rest is up to you.
- Be creative and have fun!
