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# Custom equality comparers with equals operator
If you need to compare Vectors using the overloaded operator == (see [Vector2.operator ==](https://docs.unity3d.com/ScriptReference/Vector2-operator_eq.html), [Vector3.operator ==](https://docs.unity3d.com/ScriptReference/Vector3-operator_eq.html), and [Vector4.operator ==](https://docs.unity3d.com/ScriptReference/Vector4-operator_eq.html)) you should use the respective comparer implementations:
- Vector2ComparerWithEqualsOperator
- Vector3ComparerWithEqualsOperator
- Vector4ComparerWithEqualsOperator
The interface is the same as for other [equality comparers](./reference-custom-equality-comparers.md) except the public [constructor](./reference-custom-equality-comparers.md#constructors) `error` parameter is inapplicable in this case.
## Example
```c#
[TestFixture]
public class Vector3Test
{
[Test]
public void VerifyThat_TwoVector3ObjectsAreEqual()
{
var actual = new Vector3(10e-7f, 10e-7f, 10e-7f);
var expected = new Vector3(0f, 0f, 0f);
Assert.That(actual, Is.EqualTo(expected).Using(Vector3ComparerWithEqualsOperator.Instance));
}
}
```
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