I'm trying to make an app that'll suggest a color based on a keyword the user inputs. I store prediction from the model to a [String: Double] array and then compute the output color. However, I'm stuck on two strange errors.
Here's my code:
extension Array where Element == [String: Double]{
func average() -> RGBList{
var returnValue = (r: 0, g: 0, b: 0)
var r = 0
var g = 0
var b = 0
for key in self{
r = Int(key[0].split(",")[0]) * key[1]
...
}
...
}
}
The error is on the r = Int(key[0].split(",")[0]) * key[1] line
1. No exact matches in call to subscript
2. Reference to member 'split' cannot be resolved without a contextual type
You use:
r = Int(key[0].split(",")[0]) * key[1]
You could try breaking that line down into smaller components, to better understand why it doesn't work.
For example:
let x = key[0]
No exact matches in call to subscript
Oopsies!
It's much easier to debug smaller statements.
What you are calling "key" (bad name!) is actually a Dictionary<String, Double>
So if you said:
for dictionary in self {
That would iterate through the dictionaries in your array...
...then you could action the values in the dictionary:
for key in dictionary.keys {
What are you trying to do here:
for key in self {
r = Int(key[0].split(",")[0]) * key[1]
}
self is an Array of dict [String: Double]
so key is [String: Double]
key[0] is incorrect.
If you want to access some key (note that dictionary are not ordered, so referring to item 0 is not a stable reference), you should get the array of keys
let allKeys = [String] (self[0].keys)
and get some item
allKeys[0] for instance
In the same way, key[1] is meaningless. What do you expect here ? The value ? Of which item ?
Please give an example of the array, and explain what you want to compute, that will help.