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tmsmth
10,543 PointsOptional binding with dictionary
Hello,
I tried optional binding on a dictionary, it works but i have the xcode warning : "Expression implicitly coerced from "Any?" to Any " one the print(name) line. I thought the if let unwrap optional ? Here is the code :
if let name = dictionary["group"]?["person"] {
print(name)
}
thanks !
tmsmth
10,543 PointsIt's json data, looks like :
{ "group": {
"creation": "05/29/2017"
"person": ["John Doe", "Claire Stinson"]
}
}
Maria Te
8,521 PointsOh, I haven't gone over JSON data arrays. Thanks for showing the code anyway.
1 Answer
Nathan F.
30,773 PointsI believe you can safely disregard this warning, as this is something specific to the print() function.. print needs to output a string to the console, so it coerces the type into something it can display. If you change your code to print(name.localizedDescription) I believe this will disappear.
However, what you would likely want to do in this case is try to cast your name value to String, so what you would do is this:
if let name = dictionary["group"]?["person"] as? String {
print(name)
}
tmsmth
10,543 PointsThanks Nathan for this explanation !
Nathan F.
30,773 PointsYou're very welcome!
Maria Te
8,521 PointsMaria Te
8,521 PointsCan you please show me the dictionary that you created so that we can help you? We don't know if group of person is a value. But I think I have a solution already. Just show the CODE!