clear {rolog}

Clear current query

Description

Clear current query

Usage

clear()

Value

TRUE (invisible)

See Also

query() for a opening a query.

submit() for a submitting a query.

once() for a opening a query, submitting it, and clearing it again.

findall() for a opening a query, collecting all solutions, and clearing it again.

Examples

query(call("member", expression(X), list(quote(a), "b", 3L, 4)))
submit() # X = a
submit() # X = "b"
clear()