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That article is a few years old though if you try to follow any real links, if you want to read the current code it is in the alloc crate and is of course wonderfully commented.
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CodeRabbit
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Rust did at one time have a green-threading model which required a rather heavyweight runtime; the background on the green-threading model and the reasons it were removed are outlined in RFC 230.
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I also like flume, it has impressive performance (although not the best). More importantly, it's written only with safe rust. https://github.com/zesterer/flume
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brson had a repository called https://github.com/brson/stdx and it's a pity it isn't maintained anymore: some of them are in disuse now (for example, instead of lazy_static prefer stdlib's Lazy, or better yet, you don't need them if you just want to initialize a mutex or something; also error-chain) and the list could use some maintenance
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There is a macro that enables postfix macros (it also links to an RFC on the subject): https://github.com/est31/postfix-macros
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Nutrient
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