1. ZPL II, ZBI 2, Set-Get-Do, Mirror, WML Programming Guide
  2. ZBI Commands
  3. LET
  4. Combined Boolean Expressions
  • ZPL II, ZBI 2, Set-Get-Do, Mirror, WML Programming Guide
Combined Boolean Expressions

Combined Boolean Expressions

AND
,
OR
, and
NOT
 can be used in conjunction with base Boolean expressions to recreate expanded Boolean expressions.
NOT
 — Negate the target expression.
Expression
Result
NOT 1=2
true
NOT 1=1
false
AND
 — Both expressions must be true for a true result.
Expression
Result
1=2 AND 1=2
false
2=2 AND 1=2
false
1=2 AND 2=2
false
2=2 AND 2=2
true
OR — If either expression is true, the result will be true.
Expression
Result
1=2 OR 1=2
false
1=2 OR 2=2
true
2=2 OR 1=2
true
2=2 OR 2=2
true