Re: Selecting Sub-lists After Split
- To: mathgroup at smc.vnet.net
- Subject: [mg77447] Re: Selecting Sub-lists After Split
- From: Szabolcs <szhorvat at gmail.com>
- Date: Sat, 9 Jun 2007 05:28:13 -0400 (EDT)
- Organization: University of Bergen
- References: <f4b89h$3ls$1@smc.vnet.net>
Gregory Lypny wrote: > Hello everyone, > > Suppose I have a list of real number called myList. I split it into > sub-lists of positive and negative numbers called myNewList by doing > this (there may be a more elegant way): > > myNewList = Split[myList, #1 #2 > 0 &] > > Now, how can I select all of the sub-lists of negative numbers from > myNewList? > > Any tips would be most appreciated. > > Regards, > > Gregory > Select[myNewList, Negative@First[#]&] Szabolcs