Re: seeking a lazy way to interleave a constant
As an aside.. I just looked at the source for this, what does the :static tag in the metadata do? From what I can make out... nothing. I think it is left over from an experiment to improve var lookup times prior to dynamic binding being disabled by default. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: seeking a lazy way to interleave a constant
On Apr 10, 12:36 am, David Powell d...@djpowell.net wrote: As an aside.. I just looked at the source for this, what does the :static tag in the metadata do? From what I can make out... nothing. I think it is left over from an experiment to improve var lookup times prior to dynamic binding being disabled by default. Confirmed: all of the compiler's interactions with the :static key are currently commented out. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
seeking a lazy way to interleave a constant
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! -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: seeking a lazy way to interleave a constant
D o you want this? user= (def x (interleave (iterate inc 1) (repeat 0))) #'user/x user= (take 10 x) (1 0 2 0 3 0 4 0 5 0) 2012/4/10 Andrew ache...@gmail.com 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! -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -- 庄晓丹 Email:killme2...@gmail.com xzhu...@avos.com Site: http://fnil.net Twitter: @killme2008 -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: seeking a lazy way to interleave a constant
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. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: seeking a lazy way to interleave a constant
On Mon, Apr 9, 2012 at 10:31 PM, Andrew ache...@gmail.com 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! user= (interpose 0 [1 2 3 4 5]) (1 0 2 0 3 0 4 0 5) user= -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: seeking a lazy way to interleave a constant
On 4/9/12 9:10 PM, Cedric Greevey wrote:
On Mon, Apr 9, 2012 at 10:31 PM, Andrewache...@gmail.com 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!
user= (interpose 0 [1 2 3 4 5])
(1 0 2 0 3 0 4 0 5)
user=
Ah, I forgot about that one!
As an aside.. I just looked at the source for this, what does the
:static tag in the metadata do?
(defn interpose
Returns a lazy seq of the elements of coll separated by sep
{:added 1.0
:static true}
[sep coll] (drop 1 (interleave (repeat sep) coll)))
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