[ruby-talk:8449] Re: string like istringstream (was: A bug inruby)

Jean Michel <[e-mail]> wrote:
>Josh Stern <[e-mail]> wrote:
>>Jean Michel <[e-mail]> wrote:

>>> Now, I want to re-use my code to parse an ID3V3 tag sitting in a string
>>>in memory. In C++, I can just  make the string into an istringstream and
>>>share the same code.  I don't see how I can share  the code between both
>>>situations in  ruby (of  course there would  be a way:  put the  code in
>>>class String and read the file in memory; but this is not desirable with
>>>multi-megabyte  files!). It  seems that  I need  a class  in which  both
>>>strings and  files can belong, but  I cannot do it  since neither String
>>>nor IO is a module. What did I miss here?
>>
>>I think you haven't adequately explained to the Ruby developers
>>what it is that you really want.
>>
>>What is missing from the discussion is a description
>>of the specific API that is to be shared and what amount of code 
>>resuse one has in mind.
>....

>I think that these questions and the  rest of your answer are beside the
>point. 

I'm sorry that you found it irrelevant, but I noted that the
code sharing in C++ iostream is based on sharing through an
underying structure which is basically a strstream, and that
is exactly what you have implemented in Ruby - for a few
methods at least.   In your solutions, the methods read and
seek are shared in name only, not actual code - as is the
case with template polymorphism in C++.


-= Josh