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2.1.1 Introduction to BOOL
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The two BOOL constants are
true
and
false
.
(can also be written
TRUE
,
FALSE
and
True
,
False
)
They are mainly used with the commands
if
and
while
, etc., inside CoCoA programs.
The relational operators
= <> < <= > >=
return boolean constants (see
Relational Operators).
The boolean operators are
and
,
or
,
IsIn
.
From version CoCoA-5.0.9
not
is a function (instead of
an operator).