小编Dav*_*ing的帖子

React-Native另一个由VirtualizedList支持的容器

升级到react-native 0.61之后,我收到很多类似的警告:

VirtualizedLists should never be nested inside plain ScrollViews with the same orientation - use another VirtualizedList-backed container instead.
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VirtualizedList-backed container我应该使用其他什么?为什么现在不建议那样使用?

javascript reactjs react-native

17
推荐指数
10
解决办法
3758
查看次数

SwiftData 建模和保存非空关系

我有以下代码:

import SwiftUI
import SwiftData

struct ContentView: View {
    @Environment(\.modelContext) private var modelContext

    var schoolClass: SchoolClass

    var body: some View {
        VStack {
            Image(systemName: "globe")
                .imageScale(.large)
                .foregroundStyle(.tint)
            Text("Hello, world!")
            Button("add", action: {
                let schoolClassSubject = SchoolClassSubject(schoolClass: schoolClass)
                schoolClass.schoolClassSubjects.append(schoolClassSubject)
            })
            
        }
        .padding()
    }
}

@Model
class SchoolClass {
    var name: String
    var schoolClassSubjects: [SchoolClassSubject] = []
    
    init(name: String) {
        self.name = name
    }
}

@Model
class SchoolClassSubject {
    var schoolClass: SchoolClass
    
    init(schoolClass: SchoolClass) {
        print("test")
        self.schoolClass = schoolClass
    }
}
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schoolClass …

swift swift-data swiftui

6
推荐指数
1
解决办法
1460
查看次数

恢复HAProxy统计信息

更改配置文件时,我使用以下命令重新启动HAProxy:

/usr/local/sbin/haproxy -f /etc/haproxy.cfg -p /var/run/haproxy.pid -sf $(</var/run/haproxy.pid)
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令人遗憾的是,在HAProxy恢复之后,之前发布的所有统计数据都消失了.

HAProxy是否有可能从先前的HAProxy开始恢复统计数据?

haproxy

0
推荐指数
1
解决办法
2306
查看次数