[racket] StringBuilder for Racket?

> I have a trivial task: read a null-terminated string from a stream.
> The size of the string has no predefined limit. How do I do that
> in Racket? I need some resizable thing to store characters,
> like vector<char> in C++ or StringBuilder in C# or Java.
> Does Racket have one?
>
>
Hi Dmitry,

You can use an output-string-port for this purpose.  Use the
"open-output-string" to create an output port, and write to it using the
standard port-writing functions.  Finally, use "get-output-string" to get
the final, concatenated result.

Example:

> (define op (open-output-string))
> (display "hello" op)
> (display "world" op)
> (get-output-string op)
"helloworld"


For more information, see:

    http://docs.racket-lang.org/guide/ports.html
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