<?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>String _ ZZ -- get element from string</title> <link rel="stylesheet" type="text/css" href="../../../../Macaulay2/Style/doc.css"/> </head> <body> <table class="buttons"> <tr> <td><div><a href="_sublists.html">next</a> | <a href="___String_sp_us_sp__Sequence.html">previous</a> | <a href="_sublists.html">forward</a> | <a href="___String_sp_us_sp__Sequence.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>String _ ZZ -- get element from string</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>s_i</tt></div> </dd></dl> </div> </li> <li><span>Operator: <a href="__us.html" title="a binary operator, used for subscripting and access to elements">_</a></span></li> <li><div class="single">Inputs:<ul><li><span><tt>s</tt>, <span>a <a href="___String.html">string</a></span></span></li> <li><span><tt>i</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="___String.html">string</a></span>, the <tt>i</tt>-th character of the string <tt>s</tt></span></li> </ul> </div> </li> </ul> </div> <div class="single"><h2>Description</h2> <div><p>The characters are numbered starting with 0. If <tt>i</tt> is negative, then the <tt>i</tt>-th entry counting from the end is provided. If <tt>i</tt> is out of range, an error is signaled.</p> <table class="examples"><tr><td><pre>i1 : s = "what are you thinking?" o1 = what are you thinking?</pre> </td></tr> <tr><td><pre>i2 : #s o2 = 22</pre> </td></tr> <tr><td><pre>i3 : s_-1, s_19, s_0 o3 = (?, n, w) o3 : Sequence</pre> </td></tr> </table> </div> </div> <div class="single"><h2>See also</h2> <ul><li><span><a href="_strings_spand_spnets.html" title="">strings and nets</a></span></li> <li><span><a href="___String_sp_sh_sp__Z__Z.html" title="get character from string">String # ZZ</a> -- get character from string</span></li> </ul> </div> </div> </body> </html>