instanceof Archives - IT Nursery

Java, Programming

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Any reason to prefer getClass() over instanceof when generating .equals()?

I’m using Eclipse to generate .equals() and .hashCode(), and there is an option labeled “Use ‘instanceof’ to compare types”. The default is for ...

June 4, 2022
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Java, Programming

IT Nursery

C++ equivalent of java’s instanceof

What is the preferred method to achieve the C++ equivalent of java’s instanceof? 5 Answers 5

May 27, 2022
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Javascript !instanceof If Statement

This is a really basic question really just to satisfy my curiosity, but is there a way to do something like this: if(obj ...

May 24, 2022
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Use of “instanceof” in Java [duplicate]

This question already has answers here: Closed 10 years ago. What is the ‘instanceof’ operator used for? I learned that Java has the ...

May 16, 2022
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Why does instanceof return false for some literals?

"foo" instanceof String //=> false "foo" instanceof Object //=> false true instanceof Boolean //=> false true instanceof Object //=> false false instanceof Boolean ...

May 15, 2022
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Is it possible to use the instanceof operator in a switch statement?

I have a question of using switch case for instanceof object: For example: my problem can be reproduced in Java: if(this instanceof A) ...

May 14, 2022
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The performance impact of using instanceof in Java

I am working on an application and one design approach involves extremely heavy use of the instanceof operator. While I know that OO ...

May 13, 2022
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What is the instanceof operator in JavaScript?

The instanceof keyword in JavaScript can be quite confusing when it is first encountered, as people tend to think that JavaScript is not ...

May 12, 2022
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What is the difference between typeof and instanceof and when should one be used vs. the other?

In my particular case: callback instanceof Function or typeof callback == "function" does it even matter, what’s the difference? Additional Resource: JavaScript-Garden typeof ...

May 4, 2022
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What is the difference between instanceof and Class.isAssignableFrom(…)?

Which of the following is better? a instanceof B or B.class.isAssignableFrom(a.getClass()) The only difference that I know of is, when ‘a’ is null, ...

May 4, 2022
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