Null object: Difference between revisions
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Langurmonkey (talk | contribs) |
Langurmonkey (talk | contribs) |
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Null can be compared for directly, using equality operators, or can be checked with the isNull() function. Operators ending with a ? mark propagate null. A null in an expression test is a non-truthy result. |
Null can be compared for directly, using equality operators, or can be checked with the isNull() function. Operators ending with a ? mark propagate null. A null in an expression test is a non-truthy result. |
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{{works with|langur|0.10}} |
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Prior to 0.10, multi-variable declaration/assignment would use parentheses around variable names and values. |
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writeln .x == null |
writeln .x == null |
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