Null object: Difference between revisions
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Walterpachl (talk | contribs) (→{{header|ooRexx}}: Extended the example and added output) |
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if {![dict exists $dic nullval]} ...</lang> |
if {![dict exists $dic nullval]} ...</lang> |
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Note that lists do not support anything like nulls, since they are strictly sequences of values. |
Note that lists do not support anything like nulls, since they are strictly sequences of values. |
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=={{header|Wart}}== |
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The null value ''nil'' is also the only false value. |
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<lang wart>(not nil)</lang> |
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{{omit from|GUISS}} |
{{omit from|GUISS}} |
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