first2: http://docs.factorcode.org/content/word-first2,sequences.html
In general, firstn: http://docs.factorcode.org/content/word-firstn,sequences.generalizations.html Regards, --Alex Vondrak ________________________________________ From: Andrew Pennebaker [andrew.penneba...@gmail.com] Sent: Sunday, August 21, 2011 11:20 AM To: Factor Subject: [Factor-talk] sequences and the stack The stack contains a sequence of number pairs: { { x1 y1 } { x2 y2 } { x3 y3 } ... } I want to map over the pairs, accessing xi and yi. [ ! stack = { xi yi } ! ... ! stack = xi yi ] map What's the code that goes in !... ? Other than using nth, how can I do this? Is there a word that pops the elements of a sequence onto the stack? Cheers, Andrew Pennebaker www.yellosoft.us<http://www.yellosoft.us> ------------------------------------------------------------------------------ Get a FREE DOWNLOAD! and learn more about uberSVN rich system, user administration capabilities and model configuration. Take the hassle out of deploying and managing Subversion and the tools developers use with it. http://p.sf.net/sfu/wandisco-d2d-2 _______________________________________________ Factor-talk mailing list Factor-talk@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/factor-talk