The best replacement for hashcode is identityhashcode.

The best alternatives to hashcode are rated as following:
★★★★★  identityhashcode
★★★★  equals

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Speaking about hashcode, one probably shouldn't forget about hashmap.

Other search terms related to hashcode and their ratings are:
★★★★★ hashmap
★★★ equals
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hashcode
identityhashcode
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