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<head><title>QQParser -- a parser that accepts (and returns) a rational number, one character at a time</title>
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<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="___Q__Q__Parser.html" title="a parser that accepts (and returns) a rational number, one character at a time">QQParser</a></div>
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<div><h1>QQParser -- a parser that accepts (and returns) a rational number, one character at a time</h1>
<div class="single"><h2>Description</h2>
<div><p>The denominator must be present.</p>
<table class="examples"><tr><td><pre>i1 : (QQParser : charAnalyzer) "-123456789/54321"
41152263
o1 = - --------
18107
o1 : QQ</pre>
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<div class="single"><h2>See also</h2>
<ul><li><span><a href="_char__Analyzer.html" title="a lexical analyzer that provides characters from a string one at a time">charAnalyzer</a> -- a lexical analyzer that provides characters from a string one at a time</span></li>
<li><span><a href="___Parser_sp_co_sp__Analyzer.html" title="combine a parser with a lexical analyzer to make a complete system">Parser : Analyzer</a> -- combine a parser with a lexical analyzer to make a complete system</span></li>
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<div class="waystouse"><div class="single"><h2>Code</h2>
<pre>../Parsing.m2:91:53-91:122: --source code:
Function % Parser := (fun,p) -> new Parser from ( c -> if (p' := p c) =!= null then if c === null then fun p' else fun % p' )
| symbol class value location of symbol
| ------ ----- ----- ------------------
| fun : FunctionClosure -- {*Function[../Parsing.m2:161:25-161:32]*} ../Parsing.m2:91:23-91:25
| p : Parser -- {*Function[../Parsing.m2:99:54-111:83]*} ../Parsing.m2:91:27-91:27</pre>
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