Re: Different higher-order func notation? (was Re: RFC 23 (v1) Higher order functions)

[Jeremy Howard]

> > Just as simply,
> >
> > - $foo is the variable 'foo'
> > - ^foo is the placeholder 'foo'
> > - $_ is the default variable
> > - ^_ is the default placeholder
>
> Yeah, I personally can read this much clearer. Peter also mentions that
> __ is hard to distinguish from _, unless they're right next to each
> other, and I think this is a very valid point.
>
> I think the principle of a "general purpose placeholder" is a good one.
> But I think _ is already used so much in Perl that something else is
> better. I like ^ since is looks like a carat ("insert your variable
> here"), personally.
>
Yes, I change my mind <sounds of gears clicking...>. I like the '^' prefix
too. The difficulty of reading __ would be a pain.