Sidebar: thanks to Isiah Meadows, the FBS proposal now also supports constructor wrapping via the `::new` syntax:
let factory = SomeClass::new; On Mon, Dec 14, 2015 at 9:00 AM Marius Gundersen <[email protected]> wrote: > Do we really need to add support for await in a pipeline syntax sugar when > there already is a piping support in `.then()`? If you need to await > something in that chain, then just use `.then()`. > > ```js > let result = await fs.readFile('index.txt') > .then(aSingleParamFunction) > .then(anotherSingleParamFunction) > .then(x => multiParamFunction(x, 10)); > ``` > > I really don't see much gain in adding this syntax when there is already a > FBS proposal that covers most of the cases. The pipe operator only supports > single param functions. With multiple params you either need to use > fat-arrow (while FBS handles multiple params) or you need a special > function that is curryable. So now we either need functions that is > curryable (for |>) or a function that relies on the `this` value (for FBS), > so libraries will probably need to be specially written for whichever > proposal is added to the spec. It looks to me like FBS adds a lot more > value than |> does. > > > On Mon, Dec 14, 2015 at 2:05 PM, Bruno Jouhier <[email protected]> wrote: > >> `await` could be handled by with contextual lexing: handling `|> await` >> as a single keyword. >> >> Another solution would be to collapse the two into a variant of the >> pipeline operator: `|await>`, `|!>`, ... >> >> This could be an opportunity to revive the syntax sugar that was proposed >> in http://wiki.ecmascript.org/doku.php?id=strawman:concurrency >> >> ```js >> // concurrency strawman >> lines = fs.readFile!('./index.txt').split('\n'); >> // pipeline operator >> lines = './index.txt' |!> fs.readFile |> str => str.split('\n') >> ``` >> >> _______________________________________________ >> 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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