<?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>letterParser -- a parser that accepts a single letter and returns it</title>
<link rel="stylesheet" type="text/css" href="../../../../Macaulay2/Style/doc.css"/>
</head>
<body>
<table class="buttons">
<tr>
<td><div><a href="_const__Parser.html">next</a> | <a href="_future__Parser.html">previous</a> | <a href="_const__Parser.html">forward</a> | <a href="_future__Parser.html">backward</a> | <a href="___Parser.html">up</a> | <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>
<div><a href="index.html" title="a framework for building parsers">Parsing</a> > <a href="___Parser.html" title="the class of all parsers">Parser</a> > <a href="_letter__Parser.html" title="a parser that accepts a single letter and returns it">letterParser</a></div>
<hr/>
<div><h1>letterParser -- a parser that accepts a single letter and returns it</h1>
<div class="single"><h2>Description</h2>
<div><table class="examples"><tr><td><pre>i1 : p = letterParser "a"
o1 = p
o1 : Parser</pre>
</td></tr>
<tr><td><pre>i2 : p "b"</pre>
</td></tr>
<tr><td><pre>i3 : p null
o3 = a</pre>
</td></tr>
</table>
</div>
</div>
<div class="waystouse"><div class="single"><h2>Code</h2>
<pre>../Parsing.m2:60:26-60:87: --source code:
letterParser = Parser (c -> if alpha#?c then new Parser from (b -> if b === null then c))</pre>
</div>
</div>
</div>
</body>
</html>
