28 lines
1.1 KiB
Markdown
28 lines
1.1 KiB
Markdown
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# Custom equality comparers with equals operator
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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:
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- Vector2ComparerWithEqualsOperator
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- Vector3ComparerWithEqualsOperator
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- Vector4ComparerWithEqualsOperator
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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.
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## Example
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```c#
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[TestFixture]
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public class Vector3Test
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{
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[Test]
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public void VerifyThat_TwoVector3ObjectsAreEqual()
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{
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var actual = new Vector3(10e-7f, 10e-7f, 10e-7f);
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var expected = new Vector3(0f, 0f, 0f);
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Assert.That(actual, Is.EqualTo(expected).Using(Vector3ComparerWithEqualsOperator.Instance));
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}
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}
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```
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