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A comment on Why Google Sheets ported its calculation worker from JavaScript to WasmGC. Parent comment

Re:Why Google Sheets ported its calculation worker from Java... by lesuorac on Monday July 01, 2024 @04:15PM (#40850149)
A quick search brings up this RFC to remove green threads [1] which is dated "2014-09-16". So, it's entirely likely that Rust (sure, pre-1.0) had green threads around the time that the Java conversion happened.

Although the only important thing is that WebAssembly is 2015 [2] so there's pretty much no reason to convert to Rust to target WebAssembly when neither of them were actually released.

[1]: https://github.com/rust-lang/rfcs/blob/master/text/0230-remo...

[2]: https://en.wikipedia.org/wiki/WebAssembly#History

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Re:Why Google Sheets ported its calculation worker from Java... by steveklabnik on Monday July 01, 2024 @05:38PM (#40851023)
Yeah, to be clear, I'm not taking any position on what should have been ported. Just that you had indicated you weren't sure when green threads happened, and so I'd figure I'd chime in and let you know the details.

Super specifically, https://github.com/rust-lang/rust/pull/18967, on Nov 21, 2014, is when it was actually removed.

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