proposal-explicit-resource-managemen

By tc39

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proposal-explicit-resource-managemen reviews and mentions

Posts with mentions or reviews of proposal-explicit-resource-managemen. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-08-28.
  • OpenTelemetry in 2023
    36 projects | news.ycombinator.com | 28 Aug 2023
    In addition to this, is the new (stage 3 even!)explicit resource management proposal[0], supported by TypeScript version >= 5.2[1]

    Though I agree that async context is better fit for this generally, the RMP should be good for telemetry around objects that have defined lifetime semantics, which is a step in the right direction you can use today

    [0]: https://github.com/tc39/proposal-explicit-resource-managemen...

    [1]: https://www.totaltypescript.com/typescript-5-2-new-keyword-u...

  • TypeScript 5.2's New Keyword: 'using'
    18 projects | news.ycombinator.com | 19 Jun 2023
    There's a conversation I had with Ron Buckton, the proposal champion, mainly on this specific issue. [1]

    Short answer: Yes, Disposable can leak if you forget "using" it. And it will leak if the Disposable is not guarded by advanced GC mechanisms like the FinalizationRegistry.

    Unlike C# where it's relatively easier to utilize its GC to dispose undisposed resources [2], properly utilizing FinalizationRegistry to do the same thing in JavaScript is not that simple. In response to our conversation, Ron is proposing adding the use of FinalizationRegistry as a best practice note [3], but only for native handles. It's mainly meant for JS engine developers.

    Most JS developers wrapping anything inside a Disposable would not go through the complexity of integrating with FinalizationRegistry, thus cannot gain the same level of memory-safety, and will leak if not "using" it.

    IMO this design will cause a lot of problems, misuses and abuses. But making JS to look more like C# is on Microsoft's agenda so they are probably not going to change anything.

    [1]: https://github.com/tc39/proposal-explicit-resource-managemen...

  • Douglas Crockford: “We should stop using JavaScript”
    6 projects | news.ycombinator.com | 12 Jun 2023
    I'm not _entirely_ sure which RAII you mean, but if you mean something like C#'s `using` or Java's `try-with-resources` or Python's `with`, then https://github.com/tc39/proposal-explicit-resource-managemen... and https://github.com/tc39/proposal-async-explicit-resource-man... are in stage 3 (of 4 stages) in ECMAScript's language proposal lifecycle and will be coming to a JS engine near you behind a flag soon-ish.
  • I love building a startup in Rust. I wouldn't pick it again
    11 projects | news.ycombinator.com | 17 Feb 2023
    I'd prefer something with a more sound type system, and something that makes cleaning up resources easier and more ergonomic.

    This might help with cleanup: https://github.com/tc39/proposal-explicit-resource-managemen...

    But I'm not sure anything will help with the type system. For example, this drives me absolutely insane: https://www.typescriptlang.org/play#code/MYewdgziA2CmB00QHMA...

  • Go runtime: 4 years later
    11 projects | news.ycombinator.com | 26 Sep 2022
    There's a proposal for syntax to help with this in JS, incidentally: https://github.com/tc39/proposal-explicit-resource-managemen...
  • Why Is C Faster Than Java (2009)
    8 projects | news.ycombinator.com | 26 Dec 2021
    There is no reason why you could not, in principle, have Rust-style compile-time borrow checking in a managed language.

    As an extreme example (that I have occasionally thought about doing though probably won't), you could fork TypeScript and add ownership and lifetime and inherited-mutability annotations to it, and have the compiler enforce single-ownership and shared-xor-mutable except in code that has specifically opted out of this. As with existing features of TypeScript's type system, this wouldn't affect the emitted code at all—heap allocations would still be freed nondeterministically by the tracing GC at runtime, not necessarily at the particular point in the program where they stop being used—but you'd get the maintainability benefits of not allowing unrestricted aliasing.

    (Since you wouldn't have destructors, you might need to use linear instead of affine types, to ensure that programmers can't forget to call a resource object's cleanup method when they're done with it. Alternatively, you could require https://github.com/tc39/proposal-explicit-resource-managemen... to be used, once that gets added to JavaScript.)

    Of course, if you design a runtime specifically to be targeted by such a language, more becomes possible. See https://without.boats/blog/revisiting-a-smaller-rust/ for one sketch of what this might look like.

  • Deno Joins TC39
    20 projects | news.ycombinator.com | 13 Dec 2021
    Things like https://github.com/tc39/proposal-explicit-resource-managemen.... Essentially better language level support for objects which represent some IO resource that should be reliably closed when a user is done with it. Something like the `defer` statement in Go is really missing from JS.
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