This is legal (arr is an array):
let arrenum = Array(arr.enumerated()) So why is this illegal?
extension Array {
func f() {
let arrenum = Array(self.enumerated())
// error: type of
Category: Swift
Swift, a new development language released by Apple at WWDC (Apple Developer Conference) in 2014, can run on Mac OS and iOS platforms together with Objective-C* to build applications based on the Apple platform. Swift is an easy-to-learn and easy-to-use programming language, and it is also the first system programming language with the same expressiveness and fun as a scripting language. Swift is designed with safety as the starting point to avoid various common programming error categories.
SWIFT3 – Set URL Resource Values in SWIFT 3
I am trying to convert Apple’s “ShapeEdit” example to Swift 3, and I cannot understand the change to the setResourceValue of the URL.
Apple(Swift 2) The example contains the following code:
SWIFT attribute
Overview The properties related to instances in Swift can be divided into 2 categories
Store Property
Computed Property
For storing attributes, Swift has clear regulations
When creating classes or structures For example, you must set an appropriate initial value for all storage attributes
SWIFT3 – Get two time differences in SWIFT 3
I have 2 variables, I get 2 times from datePicker, I need to save the difference between them on the variable.
let timeFormatter = DateFormatter()
timeFormatter.dateFormat = “HHmm”
time2 =
Read from the clipboard on Macos
I am a beginner in Swift, and I am trying to figure out how to read what has been copied to the clipboard on macOS (Swift 3)? I search a lot, but I can’t seem to find anything useful.
Some th
SWIFT – Google Vision Text Detection Response
I am using Google vision api to perform text recognition on the receipt image. I got some good results, but the returned format is very unreliable. If there is a large gap between the text , The re
SWIFT – Link error when building Parse in XCode 7
I am trying to add the Parse.com SDK to my Xcode 7 project. I have followed the getting started guide and I have managed to do it in Xcode 6 before.
But this time I try to build this error messag
SWIFT – MODALPRESENTATIONSTYLE .OverCurrentContext results in a problem that the remote button is pressed on the rendered view controller
I have a problem when using .overCurrentContext modalPresentationStyle on the tvOS view controller:
let vc = UIStoryboard(name : “”, bundle: Bundle.main).instantiateInitialViewController() //
SWIFT – How to use protocol extensions in WHERE clauses
protocol aView: class {}
extension aView where Self: UIView {} Anyone can help me understand This code?
>Comply with aView
and
>Belong to UIView type
protocol aView: class
Swift3 – Swift photo and saved to photo library
I have been looking for, but I can’t find the answer. I have a button “Take a picture”. When pressed, it turns on the camera and you take a picture. When you choose “Use photo”, I I hope it is save