Re: [PATCH] Gnu Elpa: stream.el: Add some more basic stream operations

[Michael Heerdegen]

Yuri Khan <address@hidden> writes:

> [...describing the semantics...]

Exactly my thoughts.

> Looking back at the thread, I recall that this exploration started
> from my conjecture that detecting the presence of an absorbing element
> could make reduction lazy wrt all following elements. The possibility
> is fun to explore, but I am now thinking that was not such a useful
> idea.

Nonetheless I think providing something like that is necessary, because
it's a required functionality.

Hmm, what would you think of a function that returns the index of the
first element of a sequence that fulfills a certain predicate (actually,
there is already something similar, `seq-position', but that is meant to
find the index of an element equal to a given one)?  That would, in some
sense, be the smallest common divider of what we discussed.


Regards,

Michael.