String Convert into double in swift 4.1

Question

let getLongijson: String = "67.0011"
let getlatijson: String = "24.8607"

let jsonlong = (getLongijson as NSString).doubleValue
let jsonlat = (getlatijson as NSString).doubleValue

Error i am Facing this Cannot use instance member 'getLongijson' within property initializer; property initializers run before 'self' is available

post all your relevant code if your error message is that, that means that your issue is not related to String conversion, is about init instead — Reinier Melian, May 14 '18 at 08:35
because longi late come form json the long late value is in string — Rehan Meo, May 14 '18 at 08:37
if your error message is **Cannot use instance member 'getLongijson' within property initializer; property initializers run before 'self' is available** this means that you have an issue in your init method — Reinier Melian, May 14 '18 at 08:37
As pointed out above, the problem is not the conversion from string to double, but that you have properties whose initialization depends on other properties of the same type. – You'll find more than 40 similar question with answers with a SO search for `[swift] property initializers run before 'self' is available` — Martin R, May 14 '18 at 08:46

score 4 · Accepted Answer · answered May 14 '18 at 08:38

4

You like this to convert String into Double:

let getLongijson: String = "67.0011"
let getlatijson: String = "24.8607"

let jsonlong = Double(getLongijson)
let jsonlat = Double(getlatijson)

answered May 14 '18 at 08:38

Jogendar Choudhary

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This is the correct, Swift, method, but be aware that `jsonlong` and `jsonlat` will be optionals - ie `Double?` – Paulw11 May 14 '18 at 08:44
@Paulw11 Yes, Thank you – Jogendar Choudhary May 14 '18 at 08:57

String Convert into double in swift 4.1

1 Answers1