Question

我在Ubuntu 18.04上通过conda安装R。

Use of unresolved identifier 'self'

运行正常。 它将安装3.6.1而不是3.6.0。然后，例如，当我使用R时，安装不在conda上的软件包；

import Foundation
import Combine
import SwiftUI

public class MessageData: ObservableObject, Identifiable {
public var peerData: [Peer] = [Peer]()
public var messageData: [Message] = [Message]()
public var objectWillChange = PassthroughSubject<Void, Never>()
let subscribe = NotificationCenter.default.publisher(for: Notification.Name(rawValue: "LocalTalkNotificationReceivedData"), object: nil)
    .map( {
        ($0.object as! Data)
    } )
    .sink(receiveValue: {
        self.interpretIncoming(data: $0)
    })

init() {
    self.setupDummyData()
}

private func setupDummyData() {
    self.peerData = self.load("peerData.json")
    self.messageData = self.load("messageData.json")
}

func addMessage(message: String, sender: MessageSource, name: String) {
    let newMessage = Message(id: Date().hashValue,
                             content: message,
                             source: sender,
                             correspondent: name)
    self.messageData.append(newMessage)
    self.objectWillChange.send()
}

func load<T: Decodable>(_ filename: String, as type: T.Type = T.self) -> T {
    let data: Data

    guard let file = Bundle.main.url(forResource: filename, withExtension: nil)
        else {
            fatalError("Couldn't find \(filename) in main bundle.")
    }

    do {
        data = try Data(contentsOf: file)
    } catch {
        fatalError("Couldn't load \(filename) from main bundle:\n\(error)")
    }

    do {
        let decoder = JSONDecoder()
        return try decoder.decode(T.self, from: data)
    } catch {
        fatalError("Couldn't parse \(filename) as \(T.self):\n\(error)")
    }
}

func interpretIncoming(data sent: Data) {
    do {
        let receivedTransmission = try NSKeyedUnarchiver.unarchiveTopLevelObjectWithData(sent) as! [String: Any]
        self.addMessage(message: receivedTransmission["messagePayload"] as! String,
                        sender: .them,
                        name: receivedTransmission["messageSender"] as! String)
    } catch {
        print("FAILED DECODING THING")
    }
}

我收到此错误：

v=3.6.0
conda create -n env-r${v} -c r r=${v} r-ggplot2 r-gridExtra r-gtable r-tidyr r-devtools
conda activate env-r${v}

如果我打开R并在其中运行内容，则会出现更多错误：

Rscript -e 'install.packages("label.switching", repos="https://cran.rstudio.com")'

运行conda 4.7.5。

在R内运行Error in path.expand(new) : object 'lb' not found Calls: .First ... .libPaths -> Sys.glob -> path.expand -> path.expand Execution halted。

Error in path.expand(new) : object 'lb' not found
Calls: .First ... .libPaths -> Sys.glob -> path.expand -> path.expand
Execution halted
Error in i.p(...) : 
  (converted from warning) installation of package ‘rlang’ had non-zero exit status

通过conda进行R安装会出错

0 个答案: