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>
Note that lists do not support anything like nulls, since they are strictly sequences of values.
=={{header|Wart}}==
The null value ''nil'' is also the only false value.
<lang wart>(not nil)</lang>
{{omit from|GUISS}}
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