chriseidhof

import SwiftUI

struct SizeKey: PreferenceKey {
    static func reduce(value: inout CGSize?, nextValue: () -> CGSize?) {
        value = value ?? nextValue()
    }
}
struct ContentView: View {
    @State var width: CGFloat? = nil
    var body: some View {

nyg

// https://stackoverflow.com/a/45777692/5536516

import Foundation

struct MemoryAddress<T>: CustomStringConvertible {

    let intValue: Int

    var description: String {
        let length = 2 + 2 * MemoryLayout<UnsafeRawPointer>.size

depth42

#import "PWAssertionHandler.h"
#import "PWLog.h"
#import "Intercept_objc_exception_throw.h"
#import <objc/runtime.h>
#import "PWDispatch.h"

#ifndef NDEBUG

@interface NSAssertionHandler (PWExtensions)
@property (nonatomic, readonly) BOOL isPWHandler;

hujunfeng

What's the difference between UUID, GUID and UDID?

• UUID (Universally Unique Identifier): A sequence of 128 bits that can guarantee uniqueness across space and time, defined by [RFC 4122][rfc4122].

• GUID (Globally Unique Identifier): Microsoft's implementation of the UUID specification; often used interchangeably with UUID.

• UDID _(Unique Device Identifier)): A sequence of 40 hexadecimal characters that uniquely identify an iOS device (the device's Social Security Number, if you will). This value can be retrieved through iTunes, or found using UIDevice -uniqueIdentifier. Derived from hardware details like MAC address.

Is UDID deprecated?