hmlongco

func fetchData(url: String) async throws -> Data {
    guard let requestURL = URL(string: url) else {
        throw NetworkError.invalidURL
    }
    let (data, _) = try await URLSession.shared.data(from: requestURL)
    guard !data.isEmpty else {
        throw NetworkError.noData
    }
    return data
}

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sil_stage canonical

import Builtin
import Swift
import SwiftShims

import Observation

class ViewModel {
  @_hasStorage @_hasInitialValue private var _name: String { get set }

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//
//  LazyState.swift
//  Extensions
//
//  Created by Michael Long on 3/5/25.
//

import Observation
import SwiftUI

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// present
@available(iOS 26.0, macOS 26.0, tvOS 26.0, watchOS 26.0, visionOS 26.0, *)
#available(iOS 26.0, macOS 26.0, tvOS 26.0, watchOS 26.0, visionOS 26.0, *)

// past
@available(iOS 18.0, macOS 15.0, tvOS 18.0, watchOS 11.0, visionOS 2.0, *)
#available(iOS 18.0, macOS 15.0, tvOS 18.0, watchOS 11.0, visionOS 2.0, *)

@available(iOS 17.0, macOS 14.0, tvOS 17.0, watchOS 10.0, visionOS 1.0, *)
#available(iOS 17.0, macOS 14.0, tvOS 17.0, watchOS 10.0, visionOS 1.0, *)

hmlongco

// demonstrate advantages of moving task from view to loading state

struct FeedView: View {
    @Environment(BlueSkyClient.self) private var client
    @Environment(AppTheme.self) private var theme
    
    enum ViewState {
        case loading
        case error(String)
        case loaded([Post])

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//
//  ContentView.swift
//  ConditionalViews
//
//  Created by Michael Long on 5/28/25.
//

import SwiftUI

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@MainActor
class Test {
    // can do this
    func someTask1() {
        let _ = ""
        Task {
            let _ = ""
            let data = await doBackgroundTask()
            let _ = data // Update UI with data
        }

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class MyViewModel: ObservableObject {
    @Published var items: [Item] = []

    @MainActor
    func loadData() async {
        items = await fetchData()
    }
}

struct MyView: View {

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// original code, intermediate variable
class SomeViewModel1: ObservableObject {
    @Published var searchResults: [String] = []
    private var currentSearchTask: Task<Void, Never>?
    @MainActor
    func search(_ query: String) {
        currentSearchTask?.cancel()
        let newTask = Task {
            do {
                try await Task.sleep(for: .milliseconds(500))

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// instead of "nested" try catches...

public func load() async throws -> [FeedItem] {
    do {
        let (data, response) = try await client.get(from: url)
        guard let httpResponse = response as? HTTPURLResponse else {
            throw Error.invalidData
        }
        
        guard httpResponse.statusCode == 200 else {