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how to calculate difference and intersection of two sets?
Posted: Thu Jun 07, 2012 2:15 pm
by Lebesgue
Hi,
How to calculate the difference and intersection of two sets,which are lists ?
thx.
Re: how to calculate difference and intersection of two sets
Posted: Sat Jun 09, 2012 2:54 am
by edgar-rft
From inside Emacs, first evaluate:
You need to evaluate (require 'cl), because the Emacs "set-difference" and "intersection" functions are defined in "cl-seq.el", that is no standard part of Emacs, then try:
- C-h f set-difference
- C-h f intersection
and click on the source links in the *Help* buffer. The source links work of course only if the Emacs sources are installed.