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Start your free trialJoel holsinger
2,345 PointsConfused where i create a value for the description property.
Hi, I can't seem to figure out where to declare the value of the description property.
struct RGBColor {
let red: Double
let green: Double
let blue: Double
let alpha: Double
let description: String
// Add your code below
init(red: Double, green: Double, blue: Double, alpha: Double) {
self.red = red
self.green = green
self.blue = blue
self.alpha = alpha
description = "red: /(red), green: /(green), blue: /(blue), alpha: /(alpha)"
}
}
1 Answer
Michael Hulet
47,913 PointsYou're definitely on the right track, but your problem is that you need to use a backslash (\
) for string interpolation, not a forward slash (/
). A properly interpolated string looks like this:
let name = "Joel"
print("Hey, \(name)!") // Prints "Hey, Joel!". Notice the backslash before the parentheses
If you're familiar with other escape sequences, you'll notice that string interpolation looks a lot like those. For example, \n
tells Swift "Hey, I know it says \n
, but what I really want here is a new line", and you can write \t
if you actually want a tab character. In the case of string interpolation, you write \()
, and Swift knows to evaluate whatever expression is in the parentheses and paste the result in that spot in the string. The key character in all of this is the backslash \
. When Swift sees a backslash and then a non-whitespace character immediately next, it tries to interpret that as some kind of escape sequence. For example, if you wanted to write a double quote within a string, it'd have to look something like this:
// With the below example, the following would be printed to the console:
//
//This is how you write "double quotes" in a Swift string
print("This is how you write \"double quotes\" in a Swift string")