On Thu, Dec 12, 2013 at 1:41 PM, Rick Waldron <[email protected]>wrote:
> > > > On Thu, Dec 12, 2013 at 2:56 PM, John Barton <[email protected]>wrote: > >> >> >> >> On Thu, Dec 12, 2013 at 11:53 AM, Mark S. Miller <[email protected]>wrote: >>> >>> Keep in mind that infix ! is proposed < >>> http://wiki.ecmascript.org/doku.php?id=strawman:concurrency> for use in >>> ES7 to mean "do this operation eventually", e.g., >>> >>> p2 = p1 ! foo(a, b); >>> >> >> Please do not do this ;-) >> jjb >> > > John, I agree with you on this and have expressed my concern in the past. > > I still contend that using "!" to indicate some async characteristic just > reads contradictorily if we consider that "!" as an exclamation is also > used to indicate urgency or immediacy—which are absolutely the opposite of > "async". Of course, it could be argued that using "!" to indicate logical > negation doesn't match its written punctuation meaning either, but that > case is unrelated to both the original meaning and the opposite of the > original meaning (the same arguments are true for its factorial symbol, ML, > Scheme, Ruby and Haskell meanings). > > The concurrency strawman[0] proposes "!" as an infix operator, and gives > this as a simple example: > > function add(x, y) { return x + y; } > const sumP = add ! (3, 5); //sumP resolves in a later turn to 8. > > offline Mark lured me in to making more suggestions. I bit: p1 >< foo(a,b); // p1 "eventually when the sand runs out" foo(a,b); p1 <> foo(a,b); // Because a wikipedia page has diamond for temporal logic 'eventually'. I guess angle brackets in general are trouble however, I recall some issues with <html> and JS. // Non-uniform tokens, maybe "modified tokens", where | isn't an operator but is part of new tokens: p1|.foo(a,b); // can't we have bar dot ? p1|['foo'](a,b); // Here we have |[ ... ] p1.foo|(a,b); // I'm just substituting | for ! in the examples in [0]. p1~.foo(a,b); // not 'now' p1~['foo'](a,b); // Here we have ~[ ... ] p1.foo~(a,b); // I'm just subst ~ for ! in the [0] examples. Yes, ~ and | have meanings, but ! is so so much more common. > > [0] http://wiki.ecmascript.org/doku.php?id=strawman:concurrency >
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