On Oct 6, 7:00 pm, Rich Hickey <[EMAIL PROTECTED]> wrote:
> On Oct 6, 9:36 am, Stuart Halloway <[EMAIL PROTECTED]> wrote:
>
>
>
> > Yes, that's better. Glad you like the idea.
>
> > Does anybody not named Stuart also want to see this added to
> > Clojure? ;-)
>
> > Stuart
>
> > > On Oct 3, 3:13
On Oct 6, 10:00 am, Rich Hickey <[EMAIL PROTECTED]> wrote:
> I'm not opposed, but we'll need to find another name. Leading ? is a
> likely candidate for rule syntax, and trailing means predicate.
>
> .?.
>
> ?
Or, more verbosely, "nilsafe.."
-Stuart Sierra
--~--~-~--~~~--
> .?.
OK with me. Needs a dorky name to match. :-)
--~--~-~--~~~---~--~~
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.? kinda almost works. It's not exactly a predicate, but it means "access
this member if not null".
Or perhaps .* which would mean "access as many members as possible in the
following list".
Paul
On Mon, Oct 6, 2008 at 10:00 AM, Rich Hickey <[EMAIL PROTECTED]> wrote:
>
>
>
> On Oct 6, 9:36 am,
On Oct 6, 9:36 am, Stuart Halloway <[EMAIL PROTECTED]> wrote:
> Yes, that's better. Glad you like the idea.
>
> Does anybody not named Stuart also want to see this added to
> Clojure? ;-)
>
> Stuart
>
> > On Oct 3, 3:13 pm, Stuart Halloway <[EMAIL PROTECTED]> wrote:
> >> (defmacro ?.
> >>"li
Yes, that's better. Glad you like the idea.
Does anybody not named Stuart also want to see this added to
Clojure? ;-)
Stuart
> On Oct 3, 3:13 pm, Stuart Halloway <[EMAIL PROTECTED]> wrote:
>> (defmacro ?.
>>"like .. but drops out on null object"
>>([x form]
>> `(. ~x ~form))
>>
On Oct 3, 3:13 pm, Stuart Halloway <[EMAIL PROTECTED]> wrote:
> (defmacro ?.
> "like .. but drops out on null object"
> ([x form]
> `(. ~x ~form))
> ([x form & more]
> `(if-let x# (. ~x ~form) (.? x# [EMAIL PROTECTED]
Interesting -- I like it. It doesn't seem to be total
Groovy has a safe navigation operator. Yes, this probably enables Law
of Demeter violations, but it is darn useful when you are dealing with
existing Java APIs that required lots.of.dotted.notation.
I would like to have this in Clojure. Anybody else like it?
(defmacro ?.
"like .
