eunjin3786

import SwiftUI

struct TotalPricePreferenceKey: PreferenceKey {
    static var defaultValue: Double = 0.0
    
    static func reduce(value: inout Double, nextValue: () -> Double) {
        value += nextValue()
    }
}

eunjin3786

✅ struct KeyColorPreferenceKey: PreferenceKey {
    
    static var defaultValue: Color = .white
    
    static func reduce(value: inout Color, nextValue: () -> Color) {
        value = nextValue()
    }
}

struct ContentView: View {

eunjin3786

import DequeModule

struct Stack<T> {
    private var deque: Deque<T> = []
    
    var top: T? { deque.last }
    
    mutating func push(_ element: T) {
        deque.append(element)
    }

eunjin3786

struct Stack<T> {
    private var array: [T] = []
    
    var top: T? { array.last }
    
    mutating func push(_ element: T) {
        array.append(element)
    }
    
    mutating func pop() -> T? {

eunjin3786

import RegexBuilder

let regex = Regex {
    "Hi, WWDC"
    Capture {
        Repeat(.digit, count: 2)
    }
    "!"
}

eunjin3786

import RegexBuilder

let regex = Regex {
    "Hi, WWDC"
    Repeat(.digit, count: 2)
    "!"
}

let input = "Hi, WWDC21! Hi, WWDC22! Hi Hello"

eunjin3786

import RegexBuilder

let regex = Regex {
    "Hi, WWDC"
    Repeat(.digit, count: 2)
    "!"
}

let input = "Hi, WWDC21! Hi, WWDC22! Hi Hello"

eunjin3786

import RegexBuilder

let regex = Regex {
    "Hi, WWDC"
    Repeat(.digit, count: 2)
    "!"
}

eunjin3786

@available(macOS 13.0, iOS 16.0, watchOS 9.0, tvOS 16.0, *)
extension Regex {

    public init<Content>(@RegexComponentBuilder _ content: () -> Content) where Output == Content.RegexOutput, Content : RegexComponent
}

eunjin3786

let regex = /Hi, WWDC\d{2}!/