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<html><!-- #BeginTemplate "/Templates/tmpl.dwt" --><!-- DW6 --><head><!-- #BeginEditable "doctitle" --> <title>PTypes: lists: textmap</title><!-- #EndEditable --> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"><link rel="stylesheet" href="styles.css"></head><body bgcolor="#FFFFFF" leftmargin="40" marginwidth="40"><p><a href="../index.html"><img src="title-20.png" width="253" height="39" alt="C++ Portable Types Library (PTypes) Version 2.0" border="0"></a> <hr size="1" noshade><!-- #BeginEditable "body" --> <p class="hpath"><a href="index.html">Top</a>: <a href="basic.html">Basic types</a>: <a href="lists.html">Lists</a>: textmap</p><blockquote> <pre class="lang">class textmap { textmap(bool casesens = false); int get_count() const; void pack(); void clear(); int put(string key, string value); string operator [](int index) const; string operator [](string key) const; string getkey(int index) const;}</pre></blockquote><p><br>The <span class="lang">textmap</span> class implements an associative array of strings, i.e. textual key/value pairs. Items in a <span class="lang">textmap</span> object can be accessed both via integral indexes and textual keys. Internally, <span class="lang">textmap</span> keeps the list sorted in alphabetical order and uses binary search to find keys in a list.</p><p>The methods <span class="lang">get_count()</span>, <span class="lang">clear()</span> and <span class="lang">pack()</span> work as for <a href="lists.tobjlist.html">tobjlist</a> and are not described in this section.</p><p><span class="def">textmap::textmap(bool casesens = false)</span> constructs a textmap object, optionally with case-sensitive key search.</p><p><span class="def">int textmap::put(string key, string value)</span> associates <span class="lang">value</span> with <span class="lang">key</span>. This method can either insert or replace an existing value, as well as remove it from a textmap if <span class="lang">value</span> is an empty string.</p><p><span class="def">string textmap::operator [](string key)</span> returns a value associated with the <span class="lang">key</span>, or an empty string if <span class="lang">key</span> does not exist in a textmap.</p><p><span class="def">string textmap::operator [](int index)</span> returns a value at the position <span class="lang">index</span>. This method along with <span class="lang">get_count()</span> can be used to iterate through a textmap.</p><p><span class="def">string textmap::getkey(int index)</span> returns the key value at the position <span class="lang">index</span>.</p><p class="seealso">See also: <a href="lists.tstrlist.html">tstrlist</a></p><!-- #EndEditable --> <hr size="1"><a href="../index.html" class="ns">PTypes home</a></body><!-- #EndTemplate --></html>⌨️ 快捷键说明
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