See the answer in English> From which direction swift starts to read dictionaries? 1 one
Hello, I tried the print dictionary project in Xcode9. Like this:
var items = [“Bear”:”0″, “Glass”:”1″
Author: Simo
An error occurred while trying to save an image in NSUSERDEFAULTS
When I tried to save an image in NSUserDefaults, the application crashed due to an error.
Why? Is it possible to save images using NSUserDefaults? If not, then how to save the image?
Pi
The dome of the UIView in SWIFT
I am trying to use the following code to round the top corners
func roundCorners(corners:UIRectCorner, radius: CGFloat) {
let path = UIBezierPath(roundedRect: self.bounds,
byRoundingCorners
Array – Recourse in SWIFT
In Python, I can create a repeating list like this:
>>> [1,2,3 ]*3
[1, 2, 3, 1, 2, 3, 1, 2, 3] Is there a concise method in Swift?
The best thing I can do is:
1> var r = [Int]()
r
Swift – weak self in Didset
I rarely see people using [weak self] in didSet. Is there a reason?
I tried to use [weak self] in the didSet of the variable:
var data: Dictionary! {// [1]
didSet {[2]
self?.layoutSub
Silverlight – Caliburn Element Formula
While trying to learn the source code of the GameLibrary sample application, I saw a line like this:
ConventionManager.AddElementConvention (Rating.ValueProperty, “Value”, “ValueChanged”); Ch
Silverlight – Whether the WCF service using BasichttpBinding creates a new connection for each request?
I have a Silverlight client that calls WCF services on the IIS Web server. It uses the default basicHttpBinding settings to call. My client code has the option to use the “Update Service Reference”
Swift’s use of closed bag
The simplest way to write closures, here is the format {(parameters) -> return type in
statements
}
Examples
//let append = {(str1 aa:String ,Str2 bb: String)-> String in error, the c
Automatic tab in Silverlight 3
I need to be able to automatically tab from a control to the “next control” in an SL3 application. For example, the TextBox is limited to 3 characters-when typing the third character, the focus It
SWIFT: How to use PreProcessor Flags to implement API keys?
In Objective-C, static string constants are sometimes used to define alternate API keys (for example, the RELEASE and DEBUG keys to distinguish analysis packages, such as MixPanel, Flurry or Crashl