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Re:Show HN: “Nim in Action” is now available by 15155 on Thursday January 28, 2016 @12:56PM (#10989870)
Does nim have a cross-thread, single shared heap or thread-ownership-assignment of memory yet?

I don't think it is possibly to cleanly implement a epoll/kqueue-backed multi-threaded (web)server/reactor without it.

Re:Show HN: “Nim in Action” is now available by dom96 on Thursday January 28, 2016 @01:04PM (#10989935)
It does, but the support is not very friendly in my opinion. But this is actually one thing that is currently being improved.

Currently you have to use allocShared, allocShared0 etc to use shared memory. You must then manage the memory yourself.