void remove_posting(string tname, int tpos, int wdfdec)
Description
Remove a posting of a term from the document.
Note that the term will still index the document even if all
occurrences are removed. To remove a term from a document completely,
use remove_term().
Parameter tname
The name of the term.
Parameter tpos
The position of the term.
Parameter wdfdec
The decrement that will be applied to the wdf when removing this
posting. The wdf will not go below the value of 0.
Note
An error will be thrown if the term is not at the position specified
in the position list for this term in this document or if the term
is not in the document.
Public.Xapian.Document()->get_value()