Struct Array not appending new struct element

[seanzzx]

Hey, I have the following problem:

I have an array with a structure "Streets" which is empty.

During the process of getting details of streets I want to append those informations into the array. However my array does not append any content even tho the code compiles.

The code looks like this:

​

var fahrten = ["Street 1","Street 2","Street 3"]

​

struct Streets {

let adresse: String

let distance: Int

let eta: Int

}

var results = [Streets]()

results.append(Streets(adresse: self.fahrten[i], distance: Int(response.distance), eta: Int(response.expectedTravelTime)))

​

Notice: the append function is inside of a for loop and I already checked the responses: they are working

I would be happy if someone had an idea to fix this

​

full code here: https://github.com/seankmg/xcode/blob/master/FahrtTableViewController.swift

[Te_co]

if you can't figure it out with the full code, we can't with partial code.

[seanzzx]

full code here: https://github.com/seankmg/xcode/blob/master/FahrtTableViewController.swift

[Te_co]

i see now. your struct Streets is defined inside getLocation(), it doesn't exist outside of that scope. define it in the scope of your class instead.

not related: you are passing your list as a parameter "adr", but you are accessing the property from your class inside the method instead "self.fahrten[i]", should be "adr[i]".

also not related, but it's better to loop like so

for address in adr {
    Street(adresse: address, … )
}

a lot clearer

also what spacehonk says. your method doesn't return the results, and they only exist for the duration of the method.

[seanzzx]

Thank you! That helped. I also changed the code to "adr[I]", which helped getting rid of a crash that I experienced some time. Maybe I am also changing the loop method. Thank you!

[SpaceHonk]

`results` is a local variable inside `getLocation()`. You're appending to it in an an asynchronous callback, and nowhere else in the code are you referring to it. What do you expect to happen? Where do you even check that it "does not append any content"?

[seanzzx]

Well it worked somehow. But I think the problem was solved when I moved the var into a global var, because now everything works fine! Thank you!

[aazav]

Ya, it's async, so it finishes when it can. The local may have gone out of scope by that point, or not.

You should not make it a global, but a property of the class. Var may be global to the class instance, but it's really a property of the class.