CA2226: Operators should have symmetrical overloads
Note
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| Item | Value |
|---|---|
| TypeName | OperatorsShouldHaveSymmetricalOverloads |
| CheckId | CA2226 |
| Category | Microsoft.Usage |
| Breaking Change | Non Breaking |
Cause
A type implements the equality or inequality operator and does not implement the opposite operator.
Rule Description
There are no circumstances where either equality or inequality is applicable to instances of a type, and the opposite operator is undefined. Types typically implement the inequality operator by returning the negated value of the equality operator.
The C# compiler issues an error for violations of this rule.
How to Fix Violations
To fix a violation of this rule, implement both the equality and inequality operators, or remove the one that is present.
When to Suppress Warnings
Do not suppress a warning from this rule. Your type will not work in a manner that is consistent with the .NET Framework.
Related Rules
CA1046: Do not overload operator equals on reference types
CA2225: Operator overloads have named alternates
CA2224: Override equals on overloading operator equals
CA2218: Override GetHashCode on overriding Equals
CA2231: Overload operator equals on overriding ValueType.Equals