From: Robert Klemme <bob.news@...>
Date: 2003-08-06T18:42:01+09:00
Subject: Re: Can't marshal MatchData?


"Gavin Sinclair" <gsinclair@soyabean.com.au> schrieb im Newsbeitrag
news:48928.203.185.214.34.1060113020.squirrel@webmail.imagineis.com...
> Folks,
>
> I understand there are 4 kinds of things you can't marshal: singleton
> methods, IO objects, bindings, and ... and ... someone will fill in.
>
> Why then, can't you marshal MatchData objects?  To wit:
>
>   irb(main):108:0> Marshal.dump(ms[63]).size
>   TypeError: can't dump MatchData
>           from (irb):108:in `dump'
>           from (irb):108
>           from ?:0
>
> [ms is an array of MatchData objects]
>
> I don't think MatchData is the fourth item in the incomplete list above.

Maybe a Regexp reuses the same MatchData instance through all matches
(this saves instantiations).  If that were the case it would not make much
sense marshalling a MatchData instance.  Instead one should probably
convert it into an array.

Just my 5eurocent...

    robert