Context receivers seem to be extremely useful when...

# kotlin-native

[Edoardo Luppi]

Context receivers seem to be extremely useful when dealing with transformations that should be done under a memscoped block.

context (NativePlacement)
internal fun LPWSTR.toLatin1Buffer(): LPSTR {
  val latin1BufferSize = WideCharToMultiByte(28591u /* ISO-8859-1 */, 0u, this@toLatin1Buffer, 0, null, 0, null, null)
  val latin1buffer = allocArray<CHARVar>(latin1BufferSize)
  WideCharToMultiByte(28591u /* ISO-8859-1 */, 0u, this@toLatin1Buffer, 0, latin1buffer, 0, null, null)
  return latin1buffer
}

[Oleg Yukhnevich]

IMO, yes and no, because you will always think, that you can easily/safely move NativePlacement to context receiver
and then, in this case you can accidentally be trapped in a situation when you create single MemScope block for whole application - and so it will be never actually cleared
So, that' a good use case, but for me it's dangerous - but may be Im overreacting 🙂