57 lines
1.2 KiB
Plaintext
57 lines
1.2 KiB
Plaintext
== Why is this an issue?
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There is a contract between ``++Equals(object)++`` and ``++GetHashCode()++``: If two objects are equal according to the ``++Equals(object)++`` method, then calling ``++GetHashCode()++`` on each of them must yield the same result. If this is not the case, many collections won't handle class instances correctly.
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In order to comply with the contract, ``++Equals(object)++`` and ``++GetHashCode()++`` should be either both inherited, or both overridden.
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=== Noncompliant code example
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[source,csharp]
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----
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class MyClass // Noncompliant - should also override "GetHashCode()"
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{
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public override bool Equals(object obj)
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{
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// ...
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}
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}
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----
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=== Compliant solution
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[source,csharp]
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----
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class MyClass
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{
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public override bool Equals(object obj)
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{
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// ...
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}
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public override int GetHashCode()
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{
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// ...
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}
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}
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----
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include::../see.adoc[]
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ifdef::env-github,rspecator-view[]
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'''
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== Implementation Specification
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(visible only on this page)
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include::message.adoc[]
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include::highlighting.adoc[]
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'''
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== Comments And Links
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(visible only on this page)
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include::../comments-and-links.adoc[]
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endif::env-github,rspecator-view[]
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