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| <span class="kind">method</span> operator == |
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| <span class="returntype">bool</span> |
| <span class="name ">operator ==</span>(<wbr><span class="parameter" id="==-param-other"><span class="parameter-name">other</span></span>) |
| </section> |
| <section class="desc markdown"> |
| <p>The equality operator.</p> |
| <p>The default behavior for all <code>Object</code>s is to return true if and |
| only if <code>this</code> and <code>other</code> are the same object.</p> |
| <p>Override this method to specify a different equality relation on |
| a class. The overriding method must still be an equivalence relation. |
| That is, it must be:</p><ul><li> |
| <p>Total: It must return a boolean for all arguments. It should never throw |
| or return <code>null</code>.</p></li><li> |
| <p>Reflexive: For all objects <code>o</code>, <code>o == o</code> must be true.</p></li><li> |
| <p>Symmetric: For all objects <code>o1</code> and <code>o2</code>, <code>o1 == o2</code> and <code>o2 == o1</code> must |
| either both be true, or both be false.</p></li><li> |
| <p>Transitive: For all objects <code>o1</code>, <code>o2</code>, and <code>o3</code>, if <code>o1 == o2</code> and |
| <code>o2 == o3</code> are true, then <code>o1 == o3</code> must be true.</p></li></ul> |
| <p>The method should also be consistent over time, |
| so whether two objects are equal should only change |
| if at least one of the objects was modified.</p> |
| <p>If a subclass overrides the equality operator it should override |
| the <code>hashCode</code> method as well to maintain consistency.</p> |
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