What you want is currently not possible.
If you need this functionality, I'll take a patch for tools.reader that
adds a :nil-on-unreadable option to clojure.tools.reader.edn/read.
Il giorno 16/gen/2014 11.05, "t x" <[email protected]> ha scritto:
> Either you misunderstood my question or I misunderstood your answer.
>
> I don't want the entire expression to return nil. I only want the
> _unparsable_ part to return nil.
>
> Thus, the above answer should be
>
> {:tag :message
> :chan ni}
>
> rather than
>
> nil
>
>
> On Thu, Jan 16, 2014 at 1:47 AM, Luc Prefontaine <
> [email protected]> wrote:
>
>> Wrap the read in a try catch just return nil in the catch clause
>> for this specific exception and wrap it in a function for ease
>> of use. You might want to throw up any other exceptions and
>> only catch this one....
>>
>> Luc P.
>>
>>
>> > I should add: this problem arises due to cljs / clojure talking over the
>> > network, so:
>> >
>> > (*) not using serialization is NOT an option
>> >
>> > (*) however, I don't have to use edn/read-string + pr-str
>> >
>> > (*) it's perfectly fine to use different encoding/decoding methods
>> >
>> >
>> > On Thu, Jan 16, 2014 at 12:11 AM, t x <[email protected]> wrote:
>> >
>> > > Hi,
>> > >
>> > > Right now if I do (clojure.edn/read-string ...) on a string with a
>> > > unreadable part, I get an exception. Instead, I would like to just
>> get nil.
>> > > For example:
>> > >
>> > >
>> > > ## code
>> > >
>> > > (clojure.edn/read-string
>> > > (pr-str
>> > > {:tag :message
>> > > :chan (async/chan 10)}))
>> > >
>> > > ## currently returns
>> > >
>> > > java.lang.RuntimeException: Unreadable form
>> > > at clojure.lang.Util.runtimeException (Util.java:219)
>> > >
>> > >
>> > > ## instead, I would like:
>> > >
>> > > {:tag :message
>> > > :chan :nil}
>> > >
>> > >
>> > > Is there a way to make this happen?
>> > >
>> > > Thanks!
>> > >
>> >
>> > --
>> > --
>> > You received this message because you are subscribed to the Google
>> > Groups "Clojure" group.
>> > To post to this group, send email to [email protected]
>> > Note that posts from new members are moderated - please be patient with
>> your first post.
>> > To unsubscribe from this group, send email to
>> > [email protected]
>> > For more options, visit this group at
>> > http://groups.google.com/group/clojure?hl=en
>> > ---
>> > You received this message because you are subscribed to the Google
>> Groups "Clojure" group.
>> > To unsubscribe from this group and stop receiving emails from it, send
>> an email to [email protected].
>> > For more options, visit https://groups.google.com/groups/opt_out.
>> >
>> --
>> Luc Prefontaine<[email protected]> sent by ibisMail!
>>
>> --
>> --
>> You received this message because you are subscribed to the Google
>> Groups "Clojure" group.
>> To post to this group, send email to [email protected]
>> Note that posts from new members are moderated - please be patient with
>> your first post.
>> To unsubscribe from this group, send email to
>> [email protected]
>> For more options, visit this group at
>> http://groups.google.com/group/clojure?hl=en
>> ---
>> You received this message because you are subscribed to the Google Groups
>> "Clojure" group.
>> To unsubscribe from this group and stop receiving emails from it, send an
>> email to [email protected].
>> For more options, visit https://groups.google.com/groups/opt_out.
>>
>
> --
> --
> You received this message because you are subscribed to the Google
> Groups "Clojure" group.
> To post to this group, send email to [email protected]
> Note that posts from new members are moderated - please be patient with
> your first post.
> To unsubscribe from this group, send email to
> [email protected]
> For more options, visit this group at
> http://groups.google.com/group/clojure?hl=en
> ---
> You received this message because you are subscribed to the Google Groups
> "Clojure" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to [email protected].
> For more options, visit https://groups.google.com/groups/opt_out.
>
--
--
You received this message because you are subscribed to the Google
Groups "Clojure" group.
To post to this group, send email to [email protected]
Note that posts from new members are moderated - please be patient with your
first post.
To unsubscribe from this group, send email to
[email protected]
For more options, visit this group at
http://groups.google.com/group/clojure?hl=en
---
You received this message because you are subscribed to the Google Groups
"Clojure" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
For more options, visit https://groups.google.com/groups/opt_out.
