Sorry for spamming, forgot to edit subject line. Anyway, is there a good way to get involved with https://github.com/tc39/proposal-using-statement?
Thanks, Dan On Thu, Nov 8, 2018 at 10:21 AM Peter Jaszkowiak <[email protected]> wrote: > > When replying, please edit your Subject line so it is more specific than > > "Re: > Contents of es-discuss digest..." > > I have no idea which proposal you're talking about. > > On Thu, Nov 8, 2018, 08:18 Dan Aprahamian <[email protected] wrote: > >> Is there a good way to get involved in the development of this proposal? >> >> On Thu, Oct 18, 2018 at 8:01 AM <[email protected]> wrote: >> >>> Send es-discuss mailing list submissions to >>> [email protected] >>> >>> To subscribe or unsubscribe via the World Wide Web, visit >>> https://mail.mozilla.org/listinfo/es-discuss >>> or, via email, send a message with subject or body 'help' to >>> [email protected] >>> >>> You can reach the person managing the list at >>> [email protected] >>> >>> When replying, please edit your Subject line so it is more specific >>> than "Re: Contents of es-discuss digest..." >>> Today's Topics: >>> >>> 1. Re: Has there ever been discussion around a python-like >>> "with" syntax? (Michael J. Ryan) >>> >>> >>> >>> ---------- Forwarded message ---------- >>> From: "Michael J. Ryan" <[email protected]> >>> To: [email protected] >>> Cc: [email protected], es-discuss <[email protected]> >>> Bcc: >>> Date: Wed, 17 Oct 2018 13:19:17 -0700 >>> Subject: Re: Has there ever been discussion around a python-like "with" >>> syntax? >>> I was going to mention C#'s using statement as well... though I do like >>> the use of a symbol over Ron's proposal, I think using might be a better >>> approach. >>> >>> -- >>> Michael J. Ryan >>> 480-270-4509 <(480)%20270-4509> >>> https://www.tracker1.info/ >>> [email protected] >>> [email protected] >>> >>> >>> On Mon, Oct 15, 2018 at 11:50 AM Till Schneidereit < >>> [email protected]> wrote: >>> >>>> Ron Buckton has a proposal that's quite similar to what you're talking >>>> about: https://github.com/tc39/proposal-using-statement >>>> >>>> On Mon, Oct 15, 2018 at 11:40 AM Dan Aprahamian < >>>> [email protected]> wrote: >>>> >>>>> Hello all! First time posting here. I was curious if there was ever >>>>> talk about adding something similar to python's with syntax to JS. >>>>> Obviously we already have a "with" keyword, but I figure we could probably >>>>> use "use" as the keyword instead. I was thinking something like >>>>> >>>>> // Some user defined resource that can be "entered" and "exited" >>>>> class MyResource { >>>>> // Function called when entered >>>>> async [Symbol.enter]() { >>>>> } >>>>> >>>>> // Function called when exited >>>>> [Symbol.exit]() { >>>>> } >>>>> } >>>>> >>>>> const resource = new MyResource(); >>>>> >>>>> async function useResource() { >>>>> use myResource { >>>>> // Inside here, resource has had "acquire" called on it >>>>> >>>>> await doSomethingAsync(); >>>>> // Once this block is finished executing (including async) >>>>> // release is called >>>>> } >>>>> // Release has been called now >>>>> } >>>>> >>>>> Use would effectively be the equivalent of: >>>>> >>>>> async function use(resource, body) { >>>>> await resource[Symbol.enter](); >>>>> try { >>>>> await body(); >>>>> } finally { >>>>> await resource[Symbol.exit](); >>>>> } >>>>> } >>>>> >>>>> Has something like this been considered before? >>>>> >>>>> Thanks, >>>>> Dan >>>>> _______________________________________________ >>>>> es-discuss mailing list >>>>> [email protected] >>>>> https://mail.mozilla.org/listinfo/es-discuss >>>>> >>>> _______________________________________________ >>>> es-discuss mailing list >>>> [email protected] >>>> https://mail.mozilla.org/listinfo/es-discuss >>>> >>> _______________________________________________ >>> es-discuss mailing list >>> [email protected] >>> https://mail.mozilla.org/listinfo/es-discuss >>> >> _______________________________________________ >> es-discuss mailing list >> [email protected] >> https://mail.mozilla.org/listinfo/es-discuss >> >
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