> As an example, in Java, everything is a pointer, so pointer chasing all the ti... | Hacker News

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		re-thc 6 months ago \| parent \| context \| favorite \| on: One year after switching from Java to Go > As an example, in Java, everything is a pointer, so pointer chasing all the time, which is not good for cpu cache, etc Strictly speaking that's not true. It's everything is a pointer in theory to make it easier to reason with and JIT / JVM optimizing in the background. There are primitive types and there are lots of tricks in the JVM e.g. escape analysis that places objects on the heap/stack etc.

PhilipRoman 6 months ago [–]

Despite all the advances in JIT, I've literally never seen it correctly optimize a HashMap<Integer> (happy to be proven wrong). Hopefully the renewed focus on value types can finally bring some sanity.

neonsunset 6 months ago | [–]

In C#, all struct generics are monomorphized and struct-based abstractions are zero-cost :)

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