How is a HashSet working? - Cracking the Java Coding Interview

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Cracking the #Java #Coding #Interview - Question 178: How is a HashSet working?
  1. Java
  2. Java programming language
  3. Java
  4. JDK
  5. JVM
  6. Java virtual machine
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Комментарии
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Yet another good example, why immutables (like records) are a good idea.

slartidan
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You can mutate the state of the key of an object, as long as you remove the object before the mutation then re-add it afterwards.

kevintyrrell
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I really hope this series never ends :)

mrcnkkl
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Where can I get that cup? It's amazing!

chiefx
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Great Tip to not mutate your objects after you put them into a HashSet!

devAleksander
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So question 179 : What is the utility of a Hashset ? Thank you 🙏

iam
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Why this guys name missing from title or description? Can anyone remind me of his name?

faisal
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I don't quite understand why HashSet uses HashMap in its implementation. Isn't it a bit wasteful to store an entire redundant reference (PRESENT) for every single entry in the HashSet?

jay_
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It's embarrassing how Java has not optimized HashSet in 20 years to consume less memory.

ZelenoJabko
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The question "How is a HashSet working?" is not idiomatic English: you must ask "How does a HashSet work?" instead.

dglynch