help: divide a list into other two

[salvomic]

(05-19-2015 11:08 PM)Didier Lachieze Wrote:  Try this:

Code:

flneg:=remove("x->x>=0,L1");
flpos:=CONCAT(0,remove("x->x<0,L1"));

(05-19-2015 11:15 PM)DrD Wrote:  

(05-19-2015 10:01 PM)Didier Lachieze Wrote:  This should work:

Code:

flneg:=MIN(L1,0); flpos:=MAX(L1,0);
flneg:=remove(0,flneg);
flpos:=remove(0,flpos);

You need to do it in two steps: flneg:=remove(0,MIN(L1,0)) doesn't work.

or this:

flneg:=remove((x)->x≥0,L1)

thank you both!
this tip is very interesting.