prototype for operator proposal for review

Mark S. Miller erights at
Wed May 18 10:07:17 PDT 2011

On Wed, May 18, 2011 at 9:52 AM, Brendan Eich <brendan at> wrote:

> On May 18, 2011, at 9:51 AM, Brendan Eich wrote:
> > On May 18, 2011, at 9:47 AM, Allen Wirfs-Brock wrote:
> >
> >> In the end, these are just symbols  and JS programmer are just going to
> have to learn their meaning. Existing conventions, if they exist, and
> analogous do impact initial learnability but in the long run I don't know if
> it makes much a difference as long as they aren't prone to keyboarding
> hazards.
> >
> > The precedents matter a bit, even if we try to create a new idiom. The
> problem is < not | (although doesn't that look too light in Helvetica on
> either side?).
> I don't think :> works, as you say. It looks like crap, frankly, in too
> many fonts. However, does |> not work?

I made my peace with <| when Allen pointed out that the object on the left
points at the object on the right. Flipping it around loses that mnemonic.
This "points at" intuition should be independent of any prior exposure to

> /be
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