News for hackers. Stuff that matters.
Re:Help me sort out the meaning of “{}” as a constructor arg... by paulddraper on Tuesday November 22, 2016 @07:11PM (#13018844)
Thanks, I understand your usage now.

Unspecified means the implementation has some leeway.

Undefined means the implementation can do anything.

Re:Help me sort out the meaning of “{}” as a constructor arg... by kazinator on Tuesday November 22, 2016 @07:37PM (#13018961)
Yes; as in "unspecified which choice".