[racket] serialization of math/array

On Jul 23, 2014, at 11:10 AM, Neil Toronto <neil.toronto at gmail.com> wrote:

> On 07/16/2014 10:25 AM, Berthold Bäuml wrote:
>> Hi,
>> 
>> will there be serialization support for math/array and math/matrix in the near future? As far as I understand in principle it should be possible at leas in  a straight forward way as there are  already the routines array->list and list->array.
> 
> Sorry it's taken so long to reply. Part of the problem is that `racket/serialize` isn't typed:
> 
> #lang typed/racket
> 
> > (require racket/serialize)
> > serialize
> Type Checker: missing type for identifier;
> consider using `require/typed' to import it
>  identifier: serialize
>  from module: racket/serialize in: serialize
> 
> 
> This and the fact that the array struct types are declared in Typed Racket makes adding serialization tricky at best. Also, it would only work in untyped Racket.
> 
> Generally, deserializing is hard to make type-safe, and nobody has taken it up yet for Typed Racket. Occurrence typing should help, but would require `deserialize` to take a predicate argument (like the second argument to `list*->array`), which it currently doesn't do.


Lucky us. I often leave the I/O parts of my programs untyped (I write either highly imprecise unchecked signatures or I don't provide types).