How to specify type when using ConcurrentHashMap in Clojure


Wu Yanzu

In Java I need to know ConcurrentHashMapwhat type the key or value is and then how to do it in clojure. I could create a new type ConcurrentHashMapwithout specifying the key or value, but I think it would perform better if the type could be specified. So how to specify key as Stringand value as as Int.

Unlawful

The performance ConcurrentHashMapshould not be affected by the type parameter. In java, the type parameter is only used by the compiler and is removed at compile time.

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Wu Yanzu In Java I need to know ConcurrentHashMapwhat type the key or value is and then how to do it in clojure. I could create a new type ConcurrentHashMapwithout specifying the key or value, but I think it would perform better if the type could be specified.

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