Null object: Difference between revisions
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Added the Sidef language
(→{{header|Ruby}}: added output) |
m (Added the Sidef language) |
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<lang scheme>(null? object)</lang>
Note: "null?" here tests whether a value is the empty list.
=={{header|Sidef}}==
The absence of a value is represented by a ''nil'' object.
<lang ruby>var null_obj; # initialized with an implicit 'nil'
say null_obj.is_a(nil); # true</lang>
=={{header|Slate}}==
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