Sequentially applies all tactics given by mapping a function over a list.
DESCRIPTION
When applied to a tactic-producing function f and an operand list
[x1;...;xn], the elements of which have the same type as f's domain type,
MAP_EVERY maps the function f over the list, producing a list of
tactics, then applies these tactics in sequence as in the case of EVERY.
The effect is:
MAP_EVERY f [x1;...;xn] = (f x1) THEN ... THEN (f xn)
If the operand list is empty, then MAP_EVERY has no effect.
FAILURE CONDITIONS
The application of MAP_EVERY to a function and operand list fails iff
the function fails when applied to any element in the list. The
resulting tactic fails iff any of the resulting tactics fails.
EXAMPLE
A convenient way of doing case analysis over several boolean variables is: