我有一个主“app”文件夹,它是 git 存储库的根目录。在这里,我有“ios-app”文件夹,其中我的 Xcode xcworkspace 位于“android-app”、“backend”等其他文件夹中。令人惊讶的是,Xcode 确实显示了文件的状态(即 M 表示已修改),而我能够使用 Fetch Changes 菜单选项,但我无法使用 Xcode 提交或在代码审查编辑器中查看文件。
打开代码预览时出错:
The source control operation failed because the file “...” could not be found.
Make sure a valid file exists in the repository and try again.
Run Code Online (Sandbox Code Playgroud)
提交时出错:
The working copy “...” failed to commit files.
error: pathspec 'app/ios-app/DataModel/EventMutations.swift' did not match any file(s) known to git
Run Code Online (Sandbox Code Playgroud)
控制台应用程序中没有什么有趣的,但以下细节可能是相关的:
[MT] DVTAssertions: Warning in /Library/Caches/com.apple.xbs/Sources/IDEFrameworks/IDEFrameworks-17220/IDEKit/CommandsAndSelection/IDEMenuBuilder.m:203
Details: Unknown submenu: "Xcode.IDEPegasusSourceEditor.MenuDefinition.SourceCodeAuxiliaryEditorMenuItem3" in menu: "Xcode.IDEPegasusSourceEditor.MenuDefinition.Editor"!
Object: <IDEMenuBuilder>
Method: +_menuItemForMenuItemElement:inMenuWithIdentifierUsedForDebugging:forViewController:fillingExtensionIdToMenuMap:
Thread: <NSThread: 0x7fb3aa517540>{number …Run Code Online (Sandbox Code Playgroud) 我有两台服务器A和服务器B,我想使用PowerShell将所有文件和文件夹树从服务器A复制到服务器B.
我已经尝试了下面给出的命令,但它只复制文件夹中的文件而不创建文件夹树:
Copy-Item E:\TestSource\* //TestDestination/ -recurse -force
Run Code Online (Sandbox Code Playgroud) 我正在编写一个基于HTML5 WebSocket技术的非常简单的聊天应用程序,其中服务器(使用node.js WS实现)跟踪所有连接的用户并广播每个接收的消息.另一方面,客户端连接到服务器,并根据用户的操作,将消息发送到服务器.
我观察到的问题是,除非服务器在打开连接后向客户端发送消息,否则从Google Chrome上运行的客户端发送的所有消息都会被缓冲,直到发送了几条消息.缓冲区已满后,将立即发送所有消息.这为最终用户创建了非常无响应的聊天体验.
我发现的修复是ws.send("Hello Client:" + clientId);在服务器端打开连接后添加单个,但我不确定为什么这是必要的?您可以在下面找到我的客户端和服务器组件的代码段,但ChatMate git项目中提供了完整的源代码.
服务器代码:
wsServer.on('connection', function (ws) {
var clientId = nextClientId += 1;
clients[clientId] = ws;
log("Accepted connection from client " + clientId + ".");
//The fix: If you emit this initial message from the server, then
//all of client's messages will be cached.
ws.send("Hello Client: " + clientId);
ws.on('message', function (message) {
log("Received message: " + message);
var id;
for (id …Run Code Online (Sandbox Code Playgroud) 我的第一个视图中有一个基本列表,如下所示:
func buildList(sections: [Client]) -> some View {
let list = List {
ForEach(sections) { client in
Section(header: Text(client.name)) {
ForEach(client.projects) { project in
NavigationLink(destination: BuildsRouter.build(forProject: project)) {
HStack {
Text("Test \(project.id)").fontWeight(.ultraLight)
}
}
}
}
}
}
return list
}
Run Code Online (Sandbox Code Playgroud)
我正在NavigationLink为我的Project对象提供详细信息视图。
事情是,当我做一个内存分析图,我可以看到BuildsView(从创建BuildsRouter.build(forProject: project)在之前,我确实点击导航链接创建。
问题: 有没有办法在点击链接后创建详细信息视图?
Here is the exact code that I am running on iOS 13.4/Xcode 11.4:
import SwiftUI
struct TestView: View {
var body: some View {
VStack() {
Text("Hello")
}
.frame(minWidth: .infinity)
}
}
struct LoginView_Previews: PreviewProvider {
static var previews: some View {
TestView()
}
}
Run Code Online (Sandbox Code Playgroud)
The crash happens in iOS, so it's hard to get much useful information other than the following:
Thread 1: EXC_BAD_INSTRUCTION (code=EXC_I386_INVOP, subcode=0x0)
#0 0x00007fff2c7cd371 in NSAttributedString.MetricsCache.findMetrics(requestedSize:) ()
Run Code Online (Sandbox Code Playgroud)
Setting minWidth to something other than .infinity fixes …
我正在使用firebase emulators:start启动 firebase 模拟器。当通过 Ctrl+C 关闭它时,它告诉我它没有正确关闭,我需要咨询firebase-debug.log无处可寻。我怀疑它应该在与云功能相关的所有其他内容所在的函数/文件夹中,但它不在那里。
i emulators: Shutting down emulators.
i hub: Stopping emulator hub
i ui: Stopping Emulator UI
? Emulator UI has exited upon receiving signal: SIGINT
i logging: Stopping Logging Emulator
i functions: Stopping Functions Emulator
i firestore: Stopping Firestore Emulator
i database: Stopping Database Emulator
? emulators: emulators failed to shut down cleanly, see firebase-debug.log for details.
Run Code Online (Sandbox Code Playgroud)
问题是firebase-debug.log找不到。我在哪里可以找到这个调试文件?请参阅以下functions文件夹内容:
node.js firebase google-cloud-functions google-cloud-firestore
我想以编程方式能够浏览到内的一个链接List的NavigationLinks时候出现视(深深的建设从推送通知链接)。我有一个字符串 -> Bool 字典,它绑定到Binding<Bool>我的视图中的自定义。当视图出现时,我设置了 bool 属性,导航发生,但是,它立即弹出。我按照SwiftUI NavigationLink 中的答案立即导航回并确保中的每个项目List都有唯一的标识符,但问题仍然存在。
两个问题:
import SwiftUI
class ContentViewModel: ObservableObject {
@Published var isLinkActive:[String: Bool] = [:]
}
struct ContentViewTwo: View {
@ObservedObject var contentViewModel = ContentViewModel()
@State var data = ["1", "2", "3"]
@State var shouldPushPage3: Bool = true
var page3: some View {
Text("Page 3")
.onAppear() {
print("Page 3 Appeared!")
}
}
func binding(chatId: String) -> Binding<Bool> {
return .init(get: …Run Code Online (Sandbox Code Playgroud) 我正在制作自己的自定义按钮样式,以简化按钮的外观和感觉。根据按钮是否被禁用,我想改变外观。我发现能够做到这一点的唯一方法是通过isDisabled从顶部传递属性。有没有办法直接从 获取这个ButtonStyle?
struct CellButtonStyle: ButtonStyle {
// Passed from the top... can I get this directly from configuration?
let isDisabled: Bool
func makeBody(configuration: Self.Configuration) -> some View {
let backgroundColor = isDisabled ? Color.white : Color.black
return configuration.label
.padding(7)
.background(isDisabled || configuration.isPressed ? backgroundColor.opacity(disabledButtonOpacity) : backgroundColor)
}
}
Run Code Online (Sandbox Code Playgroud)
isDisabled实际的问题是,它会导致创建按钮时处理标志的重复代码:
Button {
invitedContacts.insert(contact.identifier)
} label: {
Text(invitedContacts.contains(contact.identifier) ? "Invited" : "Invite")
}
// Passing down isDisabled twice! Would be awesome for the configuration to figure it …Run Code Online (Sandbox Code Playgroud) 我有一个接收器,需要在收到第一个值后立即取消。我不关心未来的值,只关心第一个发布的值。因为如果不存储AnyCancelable由接收器创建的,垃圾收集器将删除该接收器,所以我必须存储它。同时,我也必须在sink完成后清理它,否则,我会出现内存泄漏。
我使用 UUID \xe2\x86\x92 AnyCancelable 映射构建了一个,但我担心这比应有的更复杂;还有另一种方法可以做到这一点吗?联合有什么推荐的?
\n@Published var locationState: (location: CLLocation?, error: Error?)?\nvar requestLocationSinks: [String: AnyCancellable] = [:]\n\n// 1. Generate ID to uniquely identify the current sink.\nlet sinkID = UUID().uuidString\n\n// 2. Start the sink and store it in our ID \xe2\x86\x92 AnyCancellable dictionary.\nrequestLocationSinks[sinkID] = $locationState.sink { locationState in\n if let locationState = locationState {\n invokeCallbackWithLocationState(locationState)\n }\n // 3. Remove the stored AnyCancellable as soon as we received our first value!\n self.requestLocationSinks.removeValue(forKey: sinkID)\n}\nRun Code Online (Sandbox Code Playgroud)\n 目前,我一直在使用.lineSpacing(...),但这仅适用于多行文本。
/// Sets the amount of space between lines of text in this view.
///
/// - Parameter lineSpacing: The amount of space between the bottom of one
/// line and the top of the next line.
@inlinable public func lineSpacing(_ lineSpacing: CGFloat) -> some View
Run Code Online (Sandbox Code Playgroud)
这意味着我很难准确地从草图/figma 翻译字体,我需要调整填充以使其正确。这是一个示例,说明了这一点:
VStack {
// Line spacing is ignored.
Text("Hello, World!")
.background(Color.green)
.lineSpacing(50)
Spacer()
// Line spacing is correct.
Text("Lorem ipsum is placeholder text commonly used in the graphic, print, …Run Code Online (Sandbox Code Playgroud)