Null object: Difference between revisions
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Puppydrum64 (talk | contribs) No edit summary |
(Added solution for Action!) |
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.include "../includeARM64.inc" |
.include "../includeARM64.inc" |
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</lang> |
</lang> |
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=={{header|Action!}}== |
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<lang Action!>TYPE Object=[ |
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BYTE byteData |
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INT intData |
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CARD cardData] |
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PROC IsNull(Object POINTER ptr) |
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IF ptr=0 THEN |
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PrintE("Object is null") |
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ELSE |
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PrintE("Object is not null") |
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FI |
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RETURN |
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PROC Main() |
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Object a |
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Object POINTER ptr1=a,ptr2=0 |
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IsNull(ptr1) |
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IsNull(ptr2) |
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RETURN</lang> |
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{{out}} |
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[https://gitlab.com/amarok8bit/action-rosetta-code/-/raw/master/images/Null_object.png Screenshot from Atari 8-bit computer] |
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<pre> |
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Object is not null |
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Object is null |
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</pre> |
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=={{header|ActionScript}}== |
=={{header|ActionScript}}== |
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<lang actionscript>if (object == null) |
<lang actionscript>if (object == null) |
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