They're a bit expensive to start up, and there's a cost to sharing data between them. Neither of those things are issues most of the time.

Coro is a co-operative multitasking system. Possibly useful, but not exactly threads.

In reply to Re^3: Looking for alternative for IPC::Shareable (or increase size) by ikegami
in thread Looking for alternative for IPC::Shareable (or increase size) by DomX

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