non-copy slices

[tbourden at doc.ic.ac.uk]

Hi,

I was looking for a facility similar to slices in python library that would
avoid the implicit creation of a new list and copy of elements that is the
default behaviour. Instead I'd rather have a lazy iteratable object on the
original sequence. Well, in the end I wrote it myself but I was wondering if
I missed sth in the library. If I didn't is there a particular reason there
isn't sth like that? I find it hard to believe that all slice needs have
strictly copy semantics.

Cheers,
Themis
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