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Message-ID: <4F839C54.5040402@benmabey.com>
Date: Mon, 09 Apr 2012 20:35:00 -0600
From: Ben Mabey <b...@benmabey.com>
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Subject: Re: seeking a lazy way to interleave a constant
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On 4/9/12 8:31 PM, Andrew wrote:
> Given a lazy sequence of numbers is there a way to interleave a 
> constant and get another lazy sequence? Say the first sequence is 1 2 
> 3 4 ... I'd like the second sequence to be 1 0 2 0 3 0 4 0 ....
>
> Thanks in advance!
>

Yep, and it is even called interleave. :)

clojure.core=> (interleave [1 2 3 4] (repeat 0))
(1 0 2 0 3 0 4 0)
clojure.core=> (doc interleave)
-------------------------
clojure.core/interleave
([c1 c2] [c1 c2 & colls])
   Returns a lazy seq of the first item in each coll, then the second etc.
nil
clojure.core=> (doc repeat)
-------------------------
clojure.core/repeat
([x] [n x])
   Returns a lazy (infinite!, or length n if supplied) sequence of xs.