zhihuitang

#!/opt/homebrew/bin/python3

# Sometimes Xcode cannot resolve SPM(File -> Packages -> Resolve Package versions) if the dependency url is ssh
# This script is a workaround to resolve package versions.
# Usage:
#     python spmResolve.py
# or
#     python3 spmResolve.py
import os.path
import subprocess

zhihuitang

struct AvatarView: View {
    
    /// image
    let image: String
    
    /// size
    let size: CGFloat
    
    /// body
    var body: some View {

zhihuitang

function myappdocdir() {
    devid=$(xcrun simctl list devices | grep Booted | sed -n 's/^.*\([A-F0-9]\{8\}-\([A-F0-9]\{4\}-\)\{3\}[A-F0-9]\{12\}\).*$/\1/p')
    for folder in ~/Library/Developer/CoreSimulator/Devices/$devid/data/Containers/Data/Application/*; do
        if [[ -a $folder/.com.apple.mobile_container_manager.metadata.plist ]]; then
            if [[ 'com.apple.phone' = $(/usr/libexec/PlistBuddy -c 'Print :MCMMetadataIdentifier' $folder/.com.apple.mobile_container_manager.metadata.plist) ]]; then
                echo $folder
                break
            fi
        fi
    done

zhihuitang

//------------------------------------------------------------------------
// The SwiftUI Lab: Advanced SwiftUI Animations
// https://swiftui-lab.com/swiftui-animations-part1 (Animating Paths)
// https://swiftui-lab.com/swiftui-animations-part2 (GeometryEffect)
// https://swiftui-lab.com/swiftui-animations-part3 (AnimatableModifier)
//------------------------------------------------------------------------
import SwiftUI

struct ContentView: View {
    

zhihuitang

# Git Fuzzy Checkout
#
# Add the following script to your ~/.gitconfig by run:
#   git config --global alias.fuzzy '!f() { git branch -a | grep -m1 -e ${1}.*${2} | sed "s/remotes\/origin\///" | xargs git checkout; }; f' 
#


# alias of .gitconfig looks:
[alias]

zhihuitang

// https://stackoverflow.com/questions/33145005/swift-nsdateformatter-not-using-correct-locale-and-format/61094162#61094162

extension Date {
    var timestamp: String {
        let dataFormatter = DateFormatter()
        dataFormatter.locale = Locale(identifier: "en_US_POSIX")
        dataFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss.SSSS"
        return String(format: "%@", dataFormatter.string(from: self))
    }
}

zhihuitang

// https://www.vadimbulavin.com/swift-atomic-properties-with-property-wrappers/

/*
Although get and set are individually atomic, the combination of both is not. 
Incrementing x is not atomic, since it first calls get and then set:
*/
@propertyWrapper
struct Atomic<Value> {
    private let queue = DispatchQueue(label: "com.vadimbulavin.atomic")
    private var value: Value

zhihuitang

// https://www.vadimbulavin.com/advanced-guide-to-userdefaults-in-swift/
// what is the difference between WWDC2019 https://devstreaming-cdn.apple.com/videos/wwdc/2019/402fd460n3p3w5c/402/402_whats_new_in_swift.pdf
// The marker protocol
protocol PropertyListValue {}

extension Data: PropertyListValue {}
extension String: PropertyListValue {}
extension Date: PropertyListValue {}
extension Bool: PropertyListValue {}
extension Int: PropertyListValue {}

zhihuitang

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool
{   
    let timeline = TimelineViewController()
    let navigation = UINavigationController(rootViewController: timeline)

    let frame = UIScreen.main.bounds
    window = UIWindow(frame: frame)

    window!.rootViewController = navigation
    window!.makeKeyAndVisible()

zhihuitang

#!/bin/bash
set -o nounset
set -o errexit
set -o verbose
set -o xtrace

log() {
    local prefix="[$(date +%Y/%m/%d\ %H:%M:%S)]:"
    echo "${prefix} $@" >&2
}