Boolean values: Difference between revisions
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digits that look like a non-zero number, the value is "true" (1), and otherwise
that value is "false" (0).</p>
<p>There are two standardized binary boolean operators: & (and) and ! (or).
Newer implementations of the language may also support !! (exclusve or).
There is one unary boolean operator: ' (not).</p>
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