Issue #528 What is lense https://www.schoolofhaskell.com/school/to-infinity-and-beyond/pick-of-the-week/a-little-lens-starter-tutorial A lens is a first-class reference to a subpart of some data type. For instance, we have _1 which is the lens that “focuses on” the first element of a pair. Given a lens there are essentially three things you might want to do View the subpart Modify the whole by changing the subpart Combine this lens with another lens to look even deeper...

Issue #527 import Foundation import Combine public typealias TaskCompletion = (Result<(), Error>) -> Void public protocol Task: AnyObject { var name: String { get } func run(workflow: Workflow, completion: TaskCompletion) } public extension Task { func asPublisher(workflow: Workflow) -> AnyPublisher<(), Error> { return Future({ completion in self.run(workflow: workflow, completion: completion) }).eraseToAnyPublisher() } } let sequence = Publishers.Sequence<[AnyPublisher<(), Error>], Error>( sequence: tasks.map({ $0.asPublisher(workflow: self) }) )

Issue #526 public class Build: UsesXcodeBuild { public var arguments = [String]() public init(_ closure: (Build) -> Void = { _ in }) { closure(self) } } Use function builder public class Workflow { public var workingDirectory: String = "." public let tasks: [Task] public init(@TaskBuilder builder: () -> [Task]) { self.tasks = builder() self.tasks.forEach { task in task.workflow = self } } public init(@TaskBuilder builder: () -> Task) { self....

Issue #525 Use macOS Command Line project Example Puma Create a new macOS project, select Command Line Tool Drag Puma.xcodeproj as a sub project of our test project Go to our TestPuma target, under Link Binary with Libraries, select Puma framework Puma has dependencies on PumaCore and PumaiOS, but in Xcode we only need to select Puma framework In code, we need to explicitly import PumaiOS framework if we use any of its classes...

Issue #524 /// Any task that uses command line public protocol UsesCommandLine: AnyObject { var program: String { get } var arguments: Set<String> { get set } } public extension UsesCommandLine { func run() throws { let command = "\(program)\(arguments.joined(separator: " "))" Log.command(command) _ = try Process().run(command: command) } } class Build: UsesCommandLine { public func run() throws { arguments.insert("build") try (self as UsesCommandLine).run() } }

Issue #523 In Puma I want to make build tools for iOS and Android, which should share some common infrastructure. So we can organize dependencies like. Puma -> PumaAndroid, PumaiOS -> PumaCore -> xcbeautify, Files, Colorizer // swift-tools-version:5.1 // The swift-tools-version declares the minimum version of Swift required to build this package. import PackageDescription let package = Package( name: "Puma", platforms: [.macOS("10.15")], products: [ .library(name: "Puma", targets: ["Puma"]) ], dependencies: [ ....

Issue #522 Sometimes ago I created Puma, which is a thin wrapper around Xcode commandline tools, for example xcodebuild There’s lots of arguments to pass in xcodebuild, and there are many tasks like build, test and archive that all uses this command. Use Options struct to encapsulate parameters To avoid passing many parameters into a class, I tend to make an Options struct to encapsulate all passing parameters. I also use composition, where Build....

Issue #521 #import <React/RCTBridgeModule.h> @interface RNSurveyManager : NSObject <RCTBridgeModule> @end #import "RNSurveyManager.h" #import <React/RCTLog.h> #import <SurveyMonkeyiOSSDK/SurveyMonkeyiOSSDK.h> @interface RNSurveyManager()<SMFeedbackDelegate> @property (nonatomic, strong) SMFeedbackViewController * feedbackController; @end @implementation RNSurveyManager - (instancetype)init { self = [super init]; if (self) { self.feedbackController = [[SMFeedbackViewController alloc] initWithSurvey:@"VV8X5QA"]; self.feedbackController.delegate = self; } return self; } + (BOOL)requiresMainQueueSetup { return YES; } - (dispatch_queue_t)methodQueue { return dispatch_get_main_queue(); } RCT_EXPORT_MODULE(SurveyManager); - (void)respondentDidEndSurvey:(SMRespondent *)respondent error:(NSError *)error { NSLog(@"respondent %@ error %@", respondent, error); } RCT_EXPORT_METHOD(show:(RCTResponseSenderBlock)callback) { [UIApplication....

Issue #520 Remove quarantine xattr -d com.apple.quarantine /Applications/Flipper.app

Issue #519 Run the app https://github.com/facebook/flipper https://facebook.github.io/watchman/docs/install.html#installing-on-os-x-via-homebrew brew install watchman git clone https://github.com/facebook/flipper.git cd flipper yarn yarn start

Issue #518 let userDefaults = UserDefaults(suiteName: suiteName) userDefaults.removePersistentDomain(forName: suiteName) https://developer.apple.com/documentation/foundation/userdefaults/1417339-removepersistentdomain Calling this method is equivalent to initializing a user defaults object with init(suiteName:) passing domainName, and calling the removeObject(forKey:) method on each of its keys. Read more https://www.swiftbysundell.com/articles/the-power-of-userdefaults-in-swift/ http://dscoder.com/defaults.html https://medium.com/swift-india/userdefaults-under-the-hood-457461c8d262

Issue #517 Use ScrollView -> VStack -> ForEach -> Content struct SearchScreen: View { @State var searchObjects: [SearchObject] = [ SearchObject(name: "By name", search: { CountryManager.shared.search(byName: $0) }), SearchObject(name: "By calling code", search: { CountryManager.shared.search(byCallingCode: $0) }), SearchObject(name: "By domain", search: { CountryManager.shared.search(byDomain: $0) }), SearchObject(name: "By language", search: { CountryManager.shared.search(byLanguage: $0) }) ] var body: some View { ScrollView { VStack(alignment: .leading) { ForEach(searchObjects.enumerated().map({ $0 }), id: \.element.name, content: { index, searchObject in VStack(alignment: ....

Issue #516 Suppose we have an array of SearchObject, and user can enter search query into text property. class SearchObject: ObservableObject { let name: String let search: (String) -> [Country] var text: String = "" init(name: String, search: @escaping (String) -> [Country]) { self.name = name self.search = search } } Although SearchObject is class, when we use ForEach, the changes to passed object won’t be reflected in our array and there is no reload trigger, we need to point to object in array directly, like...

Issue #515 Use enumerated and id: \.element.name struct CountriesView: View { let countries: [Country] var body: some View { let withIndex = countries.enumerated().map({ $0 }) return List(withIndex, id: \.element.name) { index, country in NavigationLink( destination: CountryView(country: country), label: { VStack(alignment: .leading) { Text(country.name) .styleMultiline() } .paddingVertically() } ) } } }

Issue #514 Generate SSH keys ssh-keygen -t rsa -C "onmyway133@gmail.com" -f "id_rsa_github" ssh-keygen -t rsa -C "onmyway133bitbucket@gmail.com" -f "id_rsa_bitbucket" pbcopy < ~/.ssh/id_rsa_github.pub pbcopy < ~/.ssh/id_rsa_bitbucket.pub ssh-add -D ssh-add id_rsa_github ssh-add id_rsa_bitbucket vim ~/.ssh/config #Github (personal) Host gh HostName github.com User git IdentityFile ~/.ssh/id_rsa_github #Bitbucket (work) Host bb HostName bitbucket.org User git IdentityFile ~/.ssh/id_rsa_bitbucket Config git config --global user.email "onmyway133@gmail.com" git config --local user.email "onmyway133bitbucket@gmail.com" Read more https://medium.com/avocoders/github-and-bitbucket-accounts-in-a-same-pc-5f8c67fd89d2 https://www.atlassian.com/git/tutorials/setting-up-a-repository/git-config Updated at 2020-10-04 06:52:07

Issue #513 A publisher that emits before the object has changed Use workaround DispatchQueue to wait another run loop to access newValue .onReceive(store.objectWillChange, perform: { DispatchQueue.main.async { self.reload() } }) func reload() { self.isFavorite = store.isFavorite(country: country) } Read more https://forums.swift.org/t/combine-observableobject-in-uikit/28433 https://twitter.com/luka_bernardi/status/1155944329363349504

Issue #512 https://github.com/zsh-users/zsh-autosuggestions/blob/master/INSTALL.md https://github.com/robbyrussell/oh-my-zsh/tree/master/plugins/z git clone https://github.com/zsh-users/zsh-autosuggestions ${ZSH_CUSTOM:-~/.oh-my-zsh/custom}/plugins/zsh-autosuggestions vim ~/.zsh.rc /plugins plugins=( git z zsh-autosuggestions ) source ~/.zshrc

Issue #511 struct CountriesView: View { let groups: [Group] init(countries: [Country]) { self.groups = CountryManager.shared.groups(countries: countries) } var body: some View { List { ForEach(groups) { group in Section( header: Text(group.initial) .foregroundColor(Color.yellow) .styleTitle(), content: { ForEach(group.countries) { country in CountryRow(country: country) } } ) } } } }

Issue #510 Use Dictionary(grouping:by:) func groups(countries: [Country]) -> [Group] { let dictionary = Dictionary(grouping: countries, by: { String($0.name.prefix(1)) }) let groups = dictionary .map({ (key: String, value: [Country]) -> Group in return Group(initial: key, countries: value) }) .sorted(by: { $0.initial < $1.initial }) return groups }

Issue #508 We need to use frame(minWidth: 0, maxWidth: .infinity, alignment: .leading). Note that order is important, and padding should be first, and background after frame to apply color to the entire frame struct BooksScreen: View { @ObservedObject var viewModel: BooksViewModel var body: some View { List { ForEach(viewModel.books) { book in RowView(vault: book) } } .listStyle(GroupedListStyle()) } } private struct RowView: View { let book: Book var body: some View { VStack(alignment: ....