USE_THEN : string -> thm_tactic -> tactic
- SYNOPSIS
-
Apply a theorem tactic to named assumption.
- DESCRIPTION
-
The tactic USE_THEN "name" ttac applies the theorem-tactic ttac to the
assumption labelled name (or the first in the list if there is more than
one).
- FAILURE CONDITIONS
-
Fails if there is no assumption of that name or if the theorem-tactic fails
when applied to it.
- EXAMPLE
-
See LABEL_TAC for an extended example.
- USES
-
Using an assumption identified by name.
- SEE ALSO
-
ASSUME, FIND_ASSUM, HYP, LABEL_TAC, REMOVE_THEN.