Boolean values: Difference between revisions
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PatGarrett (talk | contribs) (→{{header|Visual Basic}}: A correction) |
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Metafont has the type <tt>boolean</tt>; a boolean variable can be <tt>true</tt> or <tt>false</tt>. |
Metafont has the type <tt>boolean</tt>; a boolean variable can be <tt>true</tt> or <tt>false</tt>. |
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Using non boolean values (or expressions that do not evaluate to a boolean value) results in a recoverable error; by default, any non-boolean value is interpreted as false. |
Using non boolean values (or expressions that do not evaluate to a boolean value) results in a recoverable error; by default, any non-boolean value is interpreted as false. |
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=={{header|min}}== |
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{{works with|min|0.19.3}} |
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<code>true</code> and <code>false</code> are the only boolean values in min. The <code>bool</code> function converts various objects to boolean values: |
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*non-zero number: <code>true</code> |
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*zero number: <code>false</code> |
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*non-empty quotation: <code>true</code> |
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*empty quotation: <code>false</code> |
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*non-empty string: <code>true</code> |
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*empty string: <code>false</code> |
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*boolean: no conversion performed |
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=={{header|Mirah}}== |
=={{header|Mirah}}== |
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