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Boolean values: Difference between revisions
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Similar to [[Ada]], Modula-3 has a built-in <tt>BOOLEAN</tt> type defined as
<lang modula3>TYPE BOOLEAN = {FALSE, TRUE}</lang>
=={{header|MUMPS}}==
<p>M[UMPS] has no data types per se, however, any value can be coerced to a specific
interpretation by applying certain operators.</p>
<p>Internally, the language treats any "zero" value as a "false", and any "non-zero"
value as a "true".<br/>
Values like 1, 2, 13245.08763, .1, "0.00001234ABC" and "1234ABC" are "true".<br/>
Values like 0, -3, "", " 123" (note the leading space in this one),
"+++++567", "abc", "abc1245" are "false".</p>
<p>When a boolean operator is applied to an operand, the value of that operand is
coerced to a logical value, that is: if the value starts out with a sequence of
digits that look like a non-zero number, the value is "true" (1), and otherwise
that value is "false" (0).</p>
=={{header|Objective-C}}==
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