Implementing ISeq

[eyeris]

I want to implement ISeq to provide a sequence over an Excel file. I
plan to implement it in Java. I see that Range extends ASeq for its
default implementation of cons() and more(). Is extending ASeq the
recommended way to implement a sequence?

[Meikel Brandmeyer]

Hi,

Yes. The recommended way to implement
a seq is to extend ASeq and implement first()
and more(). (The other methods are optional,
but it might be interesting to exploit some
structure of your data to provide faster versions.
YMMV)

Sincerely
Meikel

[Garth Sheldon-Coulson]

When I asked the same question a few weeks ago, Rich Hickey gave this response:

http://groups.google.com/group/clojure/browse_thread/thread/77ba769caef82803/60738209810ec491

Looking at StringSeq, as he suggested, was particularly helpful. I found useful the idea of using an integer counter to represent the current location in the data structure.

Best,
Garth