COME FROM is also the foundation of concurrency in some versions of INTERCAL - i... | Hacker News

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twic on March 16, 2021 | parent | context | favorite | on: Rust's type system is Turing-complete (2017)

COME FROM is also the foundation of concurrency in some versions of INTERCAL - if there are two COME FROM statements for the same origin, then when execution reaches that point, it forks.

Threaded INTERCAL actually has a very disciplined approach to safety. Each thread gets its own copy of all variables, so threads do not share any mutable data at all. However, they still share the same code, which is also mutable, so they can communicate through that.

tomsmeding on March 16, 2021 [–]

> a very disciplined approach to safety [...] they still share the same code, which is also mutable, so they can communicate through that

Disciplined, maybe; usable/sane, certainly not. Then again, it's INTERCAL, so that was most certainly the intention.

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