Boolean values: Difference between revisions
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* String: the empty (zero-length) string is <code>false</code>; otherwise <code>true</code>
=={{header|Liberty BASIC}}==
IF-statement, loop condition treats any non-zero integer as true.
Comparison operators evaluate to 1 (true) or 0 (false).
=={{header|Logo}}==
Logo has predefined symbols for true and false ("true and "false), which are the values returned by predicates and required by logical operators and conditionals.
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