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iOS

Posted by Jacob Carroll
Jacob Carroll
5,957 Points

Code Challenge: What is wrong? Or what am I missing?

func getRemainder(a: Int, b: Int) -> Int { return a % b }

getRemainder("value", b: "divisor")

2 Answers

Jennifer Nordell
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STAFF
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Jennifer Nordell
Treehouse Teacher
Jennifer Nordell
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher

Hi there! Unfortunately, you haven't included a link to the challenge. However, what I can tell you thus far is that you're calling the getRemainder function. This function accepts two integers. But what you're sending in is two strings. Not knowing which challenge this is, it's unclear if the instructions instruct you to call the function yourself or not. Hope this hint helps! :sparkles:

Oliver Duncan
Oliver Duncan
16,642 Points

Yeah, I'm guessing the challenge has him assigning integers to variables like so.

var value = 3
var divisor = 11

getRemainder(value, b: divisor)

Don't use quotes, Jacob.

Oliver Duncan
Oliver Duncan
16,642 Points

Ah, found the challenge. It's about internal and external parameter names. Jacob, when you declare a function in Swift, you can specify internal and external parameter names. These can drastically increase readability, and are separated by a space. Try declaring the function like this: 

// The external parameter names are 'value' and 'divisor', while the internal parameter names are 'a' and 'b'.
// We use the internal parameter names in the implementation...
func getRemainder(value a: Int, divisor b: Int) -> Int {
  return a % b
}

// Then use the external parameter names 'value' and 'divisor' to call the function
let result = getRemainder(value: 10, divisor: 3)
Jacob Carroll
Jacob Carroll
5,957 Points
Jacob Carroll
Jacob Carroll
5,957 Points

Thanks for this!