<?xml version="1.0" encoding="utf-8" ?> <!-- for emacs: -*- coding: utf-8 -*- --> <!-- Apache may like this line in the file .htaccess: AddCharset utf-8 .html --> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN" "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg-flat.dtd" > <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"> <head><title>take(BasicList,ZZ)</title> <link rel="stylesheet" type="text/css" href="../../../../Macaulay2/Style/doc.css"/> </head> <body> <table class="buttons"> <tr> <td><div><a href="___Tally.html">next</a> | <a href="_take_lp__Basic__List_cm__List_rp.html">previous</a> | <a href="___Tally.html">forward</a> | <a href="_take_lp__Basic__List_cm__List_rp.html">backward</a> | up | <a href="index.html">top</a> | <a href="master.html">index</a> | <a href="toc.html">toc</a> | <a href="http://www.math.uiuc.edu/Macaulay2/">Macaulay2 web site</a></div> </td> </tr> </table> <hr/> <div><h1>take(BasicList,ZZ)</h1> <div class="single"><h2>Synopsis</h2> <ul><li><div class="list"><dl class="element"><dt class="heading">Usage: </dt><dd class="value"><div><tt>take(v,n)</tt></div> </dd></dl> </div> </li> <li><span>Function: <a href="_take.html" title="take some elements from a list">take</a></span></li> <li><div class="single">Inputs:<ul><li><span><tt>v</tt>, <span>a <a href="___Basic__List.html">basic list</a></span></span></li> <li><span><tt>n</tt>, <span>an <a href="___Z__Z.html">integer</a></span></span></li> </ul> </div> </li> <li><div class="single">Outputs:<ul><li><span><span>a <a href="___Basic__List.html">basic list</a></span>, a list containing the first <tt>n</tt> elements of the list <tt>v</tt> if <tt>n</tt> is positive, or the last <tt>-n</tt> elements if <tt>n</tt> is negative.</span></li> </ul> </div> </li> </ul> </div> <div class="single"><h2>Description</h2> <div><table class="examples"><tr><td><pre>i1 : take({a,b,c,d,e,f},3) o1 = {a, b, c} o1 : List</pre> </td></tr> <tr><td><pre>i2 : take({a,b,c,d,e,f},-2) o2 = {e, f} o2 : List</pre> </td></tr> </table> </div> </div> </div> </body> </html>