Null object: Difference between revisions
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m (→{{header|Sidef}}: minor code fix) |
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say defined(nil) # false</lang> |
say defined(nil) # false</lang> |
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However, ''nil'' is not an object, so we can't call methods on it. Alternatively, Sidef provides the '' |
However, ''nil'' is not an object, so we can't call methods on it. Alternatively, Sidef provides the ''null'' object: |
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<lang ruby>var null_obj = |
<lang ruby>var null_obj = null; # initialize with a null value |
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say null_obj.is_a( |
say null_obj.is_a(null); # true |
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say defined(null_obj); # true</lang> |
say defined(null_obj); # true</lang> |
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