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&& should be used instead of & for better efficiency.
C# has a bitwise and a logical-AND operation on Booleans, that is, & and &&. Similarly, C# has a bitwise and a logical-OR operation | and ||. The difference is that the logical operations have a short circuit semantics, that is, if the evaluation of the left-hand side is enough to determine the outcome of the operation, then the right-hand side is not evaluated; the bitwise operations, instead, evaluate both sides, always, which might be incorrect is most cases, or at least inefficient.
| Class Name | Inefficient Bitwise AND (C#) | |||
|---|---|---|---|---|
| Significance | reliability | |||
| Mnemonic | CSHARP.STRUCT.BW.ANDI | |||
| Categories |
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| Availability | Available for C# only. |
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| Enabling | Checks for this warning class are enabled by
default. To disable them, add the following WARNING_FILTER rule to the
project configuration file.
WARNING_FILTER += discard class="Inefficient Bitwise AND (C#)" |
Use the logical (short-circuit) version of the operators on Booleans.
The following configuration file parameters affect checks for this warning class.
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