我如何才能懒惰初始化字段并对其执行断言?

我试过了

val table: Array<FormatInfo> by lazy {
   val t = arrayOf(...)
   assert(table.size == FORMAT_COUNT, { System.err.println("GLI error: format descriptor list doesn't match number of supported formats") })
   t
}

但是它会溢出:
java.lang.StackOverflowError
    at gli.GliKt$table$2.invoke(gli.kt:451)
    at gli.GliKt$table$2.invoke(gli.kt)
    at kotlin.SynchronizedLazyImpl.getValue(Lazy.kt:131)
    at gli.GliKt.getTable(gli.kt)
    at gli.GliKt$table$2.invoke(gli.kt:693)
    at gli.GliKt$table$2.invoke(gli.kt)
    at kotlin.SynchronizedLazyImpl.getValue(Lazy.kt:131)
    at gli.GliKt.getTable(gli.kt)
    at gli.GliKt$table$2.invoke(gli.kt:693)...

我该如何解决?

最佳答案

堆栈跟踪看起来就像您从lazy {} lambda内部调用该属性一样,显然会使它粉碎。

这应该工作:

val table: Array<FormatInfo> by lazy {
   val t = arrayOf(...)
   myAssert(t)
   t
}

08-05 13:05