The prefix symbol

[maurizio cimadamore]

On 21/06/2011 17:47, Pavel Minaev wrote:
> Isn't this only true for statement lambdas? What about Strawman 
> expression syntax, which doesn't have ')' '{'?
I was assuming a simplified version of Strawman (that has been discussed 
in this mailing list) in which both statements and expressions have the 
'{' '}'.

Maurizio
>
> Either way, it seems that it would require infinite lookahead to parse?
>
> On Tue, Jun 21, 2011 at 9:18 AM, Maurizio Cimadamore 
> <maurizio.cimadamore at oracle.com 
> <mailto:maurizio.cimadamore at oracle.com>> wrote:
>
>     On 21/06/11 17:14, Sam Pullara wrote:
>     > Both the $ and _ are valid method names so this would likely not
>     work.
>     This wouldn't be much of a problem, as the Strawman syntax cannot
>     possibly be confused with a method call - the compiler would need to
>     look for the 'special' token sequence ')' '{' after the '_' or '$'.
>
>     Maurizio
>     > Sam
>     >
>     > On Jun 21, 2011, at 2:57 AM, Maurizio Cimadamore wrote:
>     >
>     >> On 21/06/11 10:42, Milos Nikic wrote:
>     >>> Well since you are mentioning, i think it is not  unreasonable
>     to say that
>     >>> $ could be on this list too.
>     >>> $ is not very different than #, in that java web developers
>     use # for jsf
>     >>> based expressions, and $ for jsp ones.
>     >>>
>     >>> $(x) { return x + 1; }
>     >>> ${x ->   x + 1}
>     >> What about '_' as in:
>     >>
>     >> _(x) { return x + 1; }
>     >>
>     >>
>     >> It's less intrusive than # and it has that 'unnamed' feeling that I
>     >> think fits well in this case...
>     >>
>     >> Maurizio
>     >>> Regards,
>     >>> Milos
>     >>>
>     >>> On Tue, Jun 21, 2011 at 11:35 AM, Stephen Colebourne
>     >>> <scolebourne at joda.org <mailto:scolebourne at joda.org>>wrote:
>     >>>
>     >>>> Prefix character summary after 15 hours:
>     >>>>
>     >>>> Use a #
>     >>>>   #(x) { return x + 1; }
>     >>>>   #{x ->   x + 1}
>     >>>>
>     >>>> Use a ^
>     >>>>   ^(x) { return x + 1; }
>     >>>>   ^{x ->   x + 1}
>     >>>>
>     >>>> Use a \ (from another thread)
>     >>>>   \(x) { return x + 1; }
>     >>>>   \{x ->   x + 1}
>     >>>>
>     >>>> (I'm not listing keywords that have been suggested elsewhere)
>     >>>>
>     >>>> Issues around typing the various characters on different
>     keyboards
>     >>>> have been raised.
>     >>>>
>     >>>> Once again, does anyone have a character they prefer more
>     than one of
>     >>>> the three above that they want to be considered? Remember,
>     this isn't
>     >>>> a vote, or a discussion thread, but a "gathering the options"
>     thread.
>     >>>>
>     >>>> Stephen
>     >>>>
>     >>>>
>     >>>> On 20 June 2011 18:54, Stephen
>     Colebourne<scolebourne at joda.org <mailto:scolebourne at joda.org>>  
>     wrote:
>     >>>>> The four syntax families split into two types, those with a
>     prefix
>     >>>>> symbol and those without.
>     >>>>>
>     >>>>> The prefix symbol is commonly mentioned as #:
>     >>>>>
>     >>>>> #(x) { return x + 1; }
>     >>>>> #{x ->   x + 1}
>     >>>>>
>     >>>>>
>     >>>>> *** If you have a strong desire to see any symbol other than #
>     >>>>> considered then please respond to this thread. ***
>     >>>>>
>     >>>>> - Your reply MUST specify the symbol
>     >>>>> - Your reply MUST give a brief justification
>     >>>>> - Your reply MUST repeat the two examples above using your
>     preferred
>     >>>> symbol
>     >>>>> - You SHOULD try to ensure that your alternate symbol choice
>     would
>     >>>>> parse acceptably
>     >>>>> - You MAY reply to suggest a keyword, however you should
>     expect that
>     >>>>> to be rejected
>     >>>>>
>     >>>>> Thread rules:
>     >>>>> - Only reply if you prefer your alternate symbol to #
>     >>>>> - To discuss something, change the thread title
>     >>>>> - Don't reply just to say "I don't want a prefix symbol"
>     >>>>> - Responding with a symbol suggestion doesn't preclude your
>     first
>     >>>>> choice actually being "no prefix symbol"
>     >>>>>
>     >>>>> For example, my preferred choice of prefix symbol is #, thus
>     I should
>     >>>>> not respond to this thread!
>     >>>>>
>     >>>>> Stephen
>     >>>>> (this is an experiment to see if we can focus on one particular
>     >>>>> discussion element at a time)
>     >>>>>
>     >>
>
>
>