26 Nov
2021
26 Nov
'21
12:15 a.m.
On Thu, 25 Nov 2021, Paul Winalski wrote:
2. The DEFAULT statement. This was Forran's
IMPLICIT on steroids. It
let you say things like "data items with names beginning with A-G are
decimal, I-N are binary, and O-Z are decimal". There could also be
overlap between DEFAULT declarations. So in addition to the rule I
just mentioned, you could say "A-J are fixed point and K-Z are
floating point." With both of these rules in effect, identifier FOO
would be implicitly "fixed decimal", J would be "fixed biary, and KOOL
would be "float binary".
This reminds me of DEFINT, DEFSNG, DEFDBL, DEFSTR in MBASIC and its
descendants and DEFLNG in QBASIC. A lot of QBASIC code used "DEFINT A-Z"
for a slight speed boost.
(Not sure if these work in the Xenix version of MBASIC)
-uso.