[racket] Reading in data structures from files (specifically structs)

Depending on your needs, the serialization library might also be a good choice.

Robby

On Tue, Dec 13, 2011 at 10:28 PM, Todd Bittner <toddbittner at gmail.com> wrote:
> Yup, it even says it in the documentation under the prefab section.  I just
> didn't make it far enough down the page.
>
> Thanks.
>
>
> On Tue, Dec 13, 2011 at 10:12 PM, Vincent St-Amour <stamourv at ccs.neu.edu>
> wrote:
>>
>> Structs are generative, so this won't work.
>>
>> Prefab structs are probably what you want here.
>>
>> Vincent
>>
>>
>> At Tue, 13 Dec 2011 22:05:40 -0600,
>> Todd Bittner wrote:
>> >
>> > [1  <multipart/alternative (7bit)>]
>> > [1.1  <text/plain; ISO-8859-1 (7bit)>]
>> > I'm trying to do something like the following:
>> >
>> > I create a struct, say (struct foo (bar baz) #:transparent), where bar
>> > is a
>> > string and baz is an integer, and then write - using write, not display
>> > -
>> > several instances of the struct to a file.  When I inspect the file, it
>> > looks something like this:
>> >
>> > #(struct:foo "string1" 1)
>> > #(struct:foo "string2" 2)
>> >
>> > When I read this back in to my program, I get an s-exp back that is
>> > '#(struct:foo "string1" 1).  When I eval it, it's still '#(struct:foo
>> > "string1" 1), and calling (foo?) on it returns #f.  Is there someway
>> > that I
>> > can reconstitute this back into a foo struct?
>> >
>> > Thanks.
>> > [1.2  <text/html; ISO-8859-1 (quoted-printable)>]
>> >
>> > [2  <text/plain; us-ascii (7bit)>]
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