refactor: refactor bad smell ToArrayCallWithZeroLengthArrayArgument #4990
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- ToArrayCallWithZeroLengthArrayArgument The performance of the empty array version is the same, and sometimes even better, compared to the pre-sized version. Also, passing a pre-sized array is dangerous for a concurrent or synchronized collection as a data race is possible between the <code>size</code> and <code>toArray</code> calls. This may result in extra <code>null</code>s at the end of the array if the collection was concurrently shrunk during the operation.</p> See https://shipilev.net/blog/2016/arrays-wisdom-ancients/ for more details.
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I more or less trust the analysis from IntelliJ and shipilev. I have not measured the numbers by myself. |
MartinWitt
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SirYwell
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Repairing Code Style Issues
ToArrayCallWithZeroLengthArrayArgument
The performance of the empty array version is the same, and sometimes even better, compared
to the pre-sized version. Also, passing a pre-sized array is dangerous for a concurrent or
synchronized collection as a data race is possible between the
sizeandtoArraycalls. This may result in extra
nulls at the end of the array if the collection was concurrentlyshrunk during the operation.
See https://shipilev.net/blog/2016/arrays-wisdom-ancients/ for more details.
Repairing Code Style Issues