Swift 编译器错误 - 在为“tableView"发出 SIL 时

问题描述

使用 Xcode 6 Beta 5.我正在构建一个 tableviewcontroller，这几行代码将无法编译.

Using Xcode 6 Beta 5.I am building a tableviewcontroller and these few lines of code won't compile.

func tableView(tableView: UITableView!, cellForRowAtIndexPath indexPath: NSIndexPath!) -> UITableViewCell!
{
    let cell : OrderHistoryCell = tableView.dequeueReusableCellWithIdentifier("CellForOrderHistory", forIndexPath: indexPath) as OrderHistoryCell

    var orderHistoryDataModel: OrderHistoryDataModel = self.orderItemsArray[indexPath.section][indexPath.row - 1] as OrderHistoryDataModel

    cell.nameLabel.text = orderHistoryDataModel.orderItem.title
    cell.statusLabel.text = orderHistoryDataModel.shipment.shippingStatus.toRaw()

    let imageData: NSData = NSData(contentsOfURL: orderHistoryDataModel.orderItem.imageURL)
    cell.thumbnailImageView.image = UIImage(data: imageData)

    return cell
}

这里是编译错误:

CompileSwift normal x86_64 com.apple.xcode.tools.swift.compiler
     ........ ............

 Stack dump: ....... ........
 intermediates/newProject.build/Debug-iphonesimulator/newProject.build/Objects-
 normal/x86_64/OrderHistoryViewController.o

 1. While emitting SIL for 'tableView' at /Users/testuser/Downloads/newProject/newProject/OrderHistoryViewController.swift:131:5
 <unknown>:0: error: unable to execute command: Segmentation fault: 11
 <unknown>:0: error: swift frontend command failed due to signal
 (use -v to see invocation) Command /Applications/Xcode6-Beta5.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc
 failed with exit code 254

推荐答案

这一行的问题

   var orderHistoryDataModel: OrderHistoryDataModel = self.orderItemsArray[indexPath.section][indexPath.row - 1] as OrderHistoryDataModel

您有一个 OrderHistoryDataModel 数组的数组.
当您同时从 2 个数组中获取对象时，Xcode 无法理解对象的类型 - [indexPath.section][indexPath.row - 1].
修复它 - 在 orderItemsArray 中指定对象的类型

You have an Array of Arrays of OrderHistoryDataModel.
Xcode can't understand type of the object when you get object from 2 arrays at the time - [indexPath.section][indexPath.row - 1].
To fix it - Specify the type of the objects inorderItemsArray like this

  var orderItemsArray: [[OrderHistoryDataModel]] = []

您也可以尝试分两步获取对象.将此代码 [indexPath.section][indexPath.row - 1] 更改为:

You can also try to get object in 2 steps. Change this code [indexPath.section][indexPath.row - 1] to this:

var models: [OrderHistoryDataModel] = self.orderItemsArray[indexPath.section]
var orderHistoryDataModel: OrderHistoryDataModel =  models[indexPath.row - 1]

同时清除您的项目并删除 DerivedData 文件夹.

Also clear your project and delete DerivedData folder.

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