All Questions
1,301
questions
-1
votes
0
answers
23
views
How to add a maximum character count for multiple textfields + a function to block certain characters from being entered in a text field swift
I have been trying to do two things:
Have a maximum character limit for a few text fields. This is an issue because they are not all the same in terms of the maximum character numbers (one text field ...
- 11
0
votes
1
answer
97
views
Type '(any Error)?' has no member 'success'
This is my create group function:
webService.createGroup(url: apiUrl, requestBody: requestBody) { result in
switch result {
case .success(let response):
print(...
- 57
0
votes
1
answer
21
views
Why will updateScore function in viewcontroller not call from gamescene
So I'm trying to make it so an ad will pop up every time the score in game scene reaches a certain point in my game in Xcode using Swift but it's not calling the function that does that(...
0
votes
0
answers
24
views
Carpool ID not fetching from my API properly
I am making a join group function that enables a user to join a group once they input in a join code. This is my api route:
app.post('/api/joinGroup/:carpool_id', express.json(), async (req, res) =>...
- 57
0
votes
0
answers
36
views
I've managed to pass two-arguments function, where one-argument function is expected
func curry<A, B>(_ f: @escaping (A) -> B) -> (A) -> B {
print("is called")
return f
}
func sum(a: Int, b: Int) -> Int {
a + b
}
curry(sum)
It shouldn't even ...
- 1,485
-2
votes
1
answer
54
views
Why Fatal error: Unexpectedly found NIL while unwrapping an Optional value [closed]
I would like to read metadata from a video. The console shows me the creation date from the metadata of the file. I may be extracting the date (via string) incorrectly. Why do I get the fatal error? ...
3
votes
2
answers
77
views
Understanding named vs positional function call in Swift
I'm encountering an issue with my code and I'm trying to understand why the initial call to add fails with a "Missing argument" error, while it runs successfully when passed to a different ...
- 179
0
votes
3
answers
79
views
Swift - function that does add one or more enum values to an array
Having a struct dat has a variable that may contain a array of one or more enum values.
I want with one function the possibility to add one or more enum values, like:
mutating func addEnumValue(value: ...
- 1,042
0
votes
1
answer
174
views
Closure inside function / need explanation
I'm studying closures and saw a unknown (for me) example of the use of closures in function in the book:
func counter() -> () -> Int {
var count = 0
let incrementer: () -> Int = {
...
- 25
0
votes
1
answer
59
views
Function Types Example Code / Need Explanation / Swift
I'm currently learning Swift function types and the book gives me such code to demonstrate how we can use variables with functions:
var manipulateInteger: (Int, Int) -> Int
func multNumber(_ first:...
- 25
-1
votes
2
answers
54
views
How to use a string in a function name
I have these functions:
private func chooseOfferButton1Tapped() {
let vc = ChooseRdvVC()
vc.offerCatched = arrayCatched![0]
HapticsManager.shared.vibrate(for: .success)
...
- 41
0
votes
1
answer
148
views
Is there a performance penalty for creating a closure vs writing a function in swift?
Is there a performance penalty for creating and using a closure vs a normal function?
See example below:
using a closure:
let array = [1, 2, 3]
let doubler: (Int) -> Int = {
$0 * 2
}
array.map {...
0
votes
2
answers
58
views
Do you have an idea to improve my getRange() function in Swift?
I have a function getRange() that works very well with simple cases like Car(rent: []), Car(rent: [.Monday]) or Car(rent: [.Monday, .Tuesday]).
import SwiftUI
enum Days {
case Monday, Tuesday, ...
- 669
1
vote
2
answers
291
views
What is the difference between protocols as parameter or as generic type in Swift?
I'm pretty new in the iOS development world and I'm trying to understand protocols in Swift. Here's my code:
protocol Animal {
func printFood()
}
struct Rabbit: Animal {
func printFood() {
...
- 41
1
vote
1
answer
33
views
Unique phrase for customer
I have function where I'm creating one of the cases randomly, but I want when I start the app It will only generate the message once and when I will open it again it will be the same but not different....
