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iOS Swift Functions and Optionals Functions Syntax and Parameters

Posted by Harry Stebbings
Harry Stebbings
1,097 Points

func greeting(person: String) { println("Hello \(greeting)") } any ideas what is wrong here?

Would be really grateful for your help.

parameters.swift 
func greeting(person: String) {
    println("Hello \(greeting)")
}

2 Answers

Dino Paškvan
PLUS
Dino Paškvan
Courses Plus Student 44,108 Points
Dino Paškvan
Dino Paškvan
Courses Plus Student 44,108 Points

The function is called greeting, but not the parameter. The parameter is called person. That's what you should be including in your println statement.

kjvswift93
kjvswift93
13,515 Points
kjvswift93
kjvswift93
13,515 Points 
func greeting(person: String)  {
    println("Hello \(person)")
}

Greeting is the name of the function, not the String variable included as it's parameter. Using string interpolation we cannot pass in a function as because that wouldn't make any sense in a sentence. "Hello, a function named greeting who is supposed make me say something after the word 'hello' but I don't know what that is." would be the compiler's output if it could hypothetically print this out to the console!