The dyadic form of ". has some additional advantages. It is considerably 
faster than (monadic) ". and it is lenient with signs from other 
environments, e.g.

    _ ". '1 2 3j4 -6 +7 _8 -3p-2 not-a-number 16b1f '
1 2 3j4 _6 7 _8 _0.303964 _ 31


On 2011/12/30 16:51 , Blake McBride wrote:
> Greetings,
>
> In APL I used to use the execute function to convert a string (like
> '123.45') into a number 123.45 (after I verified that it was a valid
> number).  How can I do this in J?
>
> Thanks.
>
> Blake McBride
>
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