存到100个数字,hash表中8个位置会有很多数字了,1中可能有20个数字,存101个数字时,他先查hashcode值对应的位置,假设为1,那么就有20个数字和他的hashcode相同,他只需要跟这20个数字相比较(equals),如果每一个相同,那么就放在1这个位置,这样比较的次数就少了很多,实际上hash表中有很多位置,这里只是举例...
The most natural idea that comes to mind is implementing equals() and hashCode() by comparing the property you mapped as a database identifier (ie. the primary key attribute). This will cause problems, however, for newly created objects, because Hibernate sets the identifier value for you aft...
clone equals finalize getClass hashCode notify notifyAll toString wait wait wait Constructor Details WhatIfOperationProperties public WhatIfOperationProperties() Creates an instance of WhatIfOperationProperties class.Method Details changes public List changes() Get the changes property: List of resource ...
当两个对象的hashcode不同的话,肯定他们不能equal. 两个对象相等必须满足: hashcode相等(Hash表中的同一个key上)>>equals()返回true(这个key上的链表上的同一位置) 1、如果两个对象相等,那么它们的hashCode值一定要相等; 2、如果两个对象的hashCode相等,它们并不一定相等。 改写equals时总是要改写hashCode : impo...
If they are not equal in terms of equals() then they might or might not return the same hashCode() - if the hashCode() is well written then the chance of non-equal objects returning the same hashCode() should be low, but doesn't have to be zero. Also, if at all possible, an ...
clone equals finalize getClass hashCode notify notifyAll toString wait wait wait Constructor Details WhatIfPropertyChange public WhatIfPropertyChange() Creates an instance of WhatIfPropertyChange class.Method Details after public Object after() Get the after property: The value of the property after the...
And how is the whole relationship cleaned up? Thanks Paul Miguel de Icaza 2009年11月8日 Hello, Could you explain what is the rationale for implementing Equals/GetHashCode on things like ConstructorInfo?中文(繁體) 您的隱私權選擇 佈景主題 管理Cookie 舊版本 部落格 參與 隱私權...
(LastOutput other) => output == other.output && highlighting == other.highlighting && contentType == other.contentType; - - public override bool Equals(object obj) { - if (obj is LastOutput) - return Equals((LastOutput)obj); - return false; - } - - public override int GetHashCode(...
clone equals finalize getClass hashCode notify notifyAll toString wait wait wait Constructor Details WhatIfOperationProperties public WhatIfOperationProperties() Creates an instance of WhatIfOperationProperties class.Method Details changes public List changes() Get the changes property: List of resource ...
clone equals finalize getClass hashCode notify notifyAll toString wait wait wait Constructor Details WhatIfOperationResultInner public WhatIfOperationResultInner() Creates an instance of WhatIfOperationResultInner class. Method Details changes public List changes() Get the changes property: ...