pookjw

#import <Foundation/Foundation.h>
#import <objc/runtime.h>

@interface MyObject : NSObject <NSCopying> {
    @package NSUInteger _first;
    @package NSInteger _second;
    @package BOOL _third;
}
@end

pookjw

#import <Foundation/Foundation.h>

#pragma mark - MyDescriptor

__attribute__((objc_direct_members))
@interface MyDescriptor : NSObject {
    @package NSInteger _index;
}
- (BOOL)direct_isEqual:(MyDescriptor *)other;
@end

pookjw

#import <Foundation/Foundation.h>

@interface NSIndexSet (FastEnumeration) <NSFastEnumeration>
@end

@implementation NSIndexSet (FastEnumeration)

- (NSUInteger)countByEnumeratingWithState:(nonnull NSFastEnumerationState *)state objects:(id  _Nullable * _Nonnull)buffer count:(NSUInteger)len { 
    /*
     state

pookjw

import UIKit
import SwiftUI

final class TraitSelectionState: UITraitDefinition, UITraitBridgedEnvironmentKey {
    static func read(from traitCollection: UITraitCollection) -> Bool {
        traitCollection[TraitSelectionState.self]
    }
    
    static func write(to mutableTraits: inout any UIMutableTraits, value: Bool) {
        fatalError("Forbidden")

pookjw

import UIKit

enum Hello {
    static let foo: Int = {
        var result: Int?
        
        if Thread.isMainThread {
            result = 300
        } else {
            DispatchQueue.main.sync {

pookjw

import UIKit
import SwiftUI

struct BPHostingConfiguration<Content: View>: UIContentConfiguration {
    fileprivate let content: Content
    
    init(@ViewBuilder content: () -> Content) {
        self.content = content()
    }
    

pookjw

//
//  main.mm
//  Practice_PackageKit
//
//  Created by Jinwoo Kim on 2/4/24.
//

#import <Foundation/Foundation.h>
#import <objc/message.h>
#import <objc/runtime.h>

pookjw

import Darwin

class FooObject {
  func foo() {
    print(self)
    foo_2()
  }
}

func foo_2() {

pookjw

import Foundation

@_silgen_name("swift_task_isOnExecutor")
public func _taskIsOnExecutor<Executor: SerialExecutor>(_ executor: Executor) -> Bool



final class MySerialExecutor: SerialExecutor {
    private let queue: DispatchQueue = .init(label: "Hello")
    

pookjw

import Foundation
import CoreFoundation

// https://developer.apple.com/library/archive/documentation/CoreFoundation/Conceptual/CFCollections/Articles/creating.html#//apple_ref/doc/uid/20001132-101215-CHDEBBDB

class MyObject: NSObject {
    var string: NSString
    
    init(string: NSString) {
        self.string = string