When I nest a class inside a generic struct and try to implement the equality operator, like this:
当我在一个泛型结构中嵌套一个类并尝试实现相等运算符时，如下所示：
struct Outer<T> {
class Inner : Equatable {}
}
@infix func == <T>(lhs: Outer<T>.Inner, rhs: Outer<T>.Inner) -> Bool {
return lhs === rhs
}
I get the following error when I try to run the project:
我尝试运行项目时收到以下错误：
While emitting IR SIL function @_TFCC4Test5Outer5InnerCU__fMS1_FT_S1_ for 'init' at .../Testing.swift:20:11
<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-Beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift failed with exit code 254
However, it works fine when I do the same thing without nesting the class:
但是，当我在没有嵌套类的情况下做同样的事情时，它工作正常：
class MyClass : Equatable {}
@infix func == (lhs: MyClass, rhs: MyClass) -> Bool {
return lhs === rhs
}
Is this a bug with the compiler, or am I doing something wrong?
这是编译器的错误，还是我做错了什么？
2 个解决方案
#1
4
Nesting a class or struct in a generic type struct is now flagged as invalid by XCode6 Beta6
现在，在XCode6 Beta6中将类或结构嵌套在泛型类型结构中时将其标记为无效
#2
1
You could define the Inner class in a separate file or space, defining its operator then make a var of that type in your inner class:
您可以在单独的文件或空间中定义Inner类，定义其运算符，然后在内部类中创建该类型的var：
class Inner: Equatable {}
func == (left: Inner, right: Inner) -> Bool {
return true
}
struct Outer {
var myVar: Inner
}
As of beta 6
截至测试版6
#1
4
Nesting a class or struct in a generic type struct is now flagged as invalid by XCode6 Beta6
现在，在XCode6 Beta6中将类或结构嵌套在泛型类型结构中时将其标记为无效
#2
1
You could define the Inner class in a separate file or space, defining its operator then make a var of that type in your inner class:
您可以在单独的文件或空间中定义Inner类，定义其运算符，然后在内部类中创建该类型的var：
class Inner: Equatable {}
func == (left: Inner, right: Inner) -> Bool {
return true
}
struct Outer {
var myVar: Inner
}
As of beta 6
截至测试版6