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<html><head>
<title>FBB::Hash</title>
<link rev="made" href="mailto:Frank B. Brokken: f.b.brokken@rug.nl">
</head>
<body text="#27408B" bgcolor="#FFFAF0">
<hr>
<h1>FBB::Hash</h1>
<h2>libbobcat1-dev_2.20.01-x.tar.gz</h2>
<h2>2005-2011</h2>

<html><head>
<link rev="made" href="mailto:Frank B. Brokken: f.b.brokken@rug.nl">
</head>
<body text="#27408B" bgcolor="#FFFAF0">
<hr>
<h1></h1>

<html><head>
<title>FBB::Hash(3bobcat)</title>
<link rev="made" href="mailto:Frank B. Brokken: f.b.brokken@rug.nl">
</head>
<body text="#27408B" bgcolor="#FFFAF0">
<hr>
<h1>FBB::Hash(3bobcat)</h1>
<h2>libbobcat1-dev_2.20.01-x.tar.gz Key hashing containers</h2>
<h2>2005-2011</h2>


<p>
<h2>NAME</h2>FBB::Hash - Various mapping template classes using hashing
<p>
<h2>SYNOPSIS</h2>
    <strong>#include &lt;bobcat/hash&gt;</strong><br>
<p>
<h2>DESCRIPTION</h2>
    The <strong>FBB:Hash</strong> group of template classes offer hashing-based
mapping. Various variants are availabe, all based on the facilities offered by
the <strong>unordered_map</strong>.
<p>
The hash-map offered in the <strong>unordered_map</strong> container has a fairly
complex construction interface, and <em>Hash</em> is an attempt to simplify this
part of its interface. In practice, hashing uses a textual key, which may be
<strong>std::string</strong> or <em>char *</em> based, and the keys may be used either case
sensitively or case insensitively. <em>Hash</em> merely requires its users to
specify the map's value type, while the key may be a <em>char const *</em> or
<em>std::string</em>, used case sensitively or case insensitively.
<p>
<h2>NAMESPACE</h2>
    <strong>FBB</strong><br>
    All constructors, members, operators and manipulators, mentioned in this
man-page, are defined in the namespace <strong>FBB</strong>.
<p>
<h2>INHERITS FROM</h2>
    <strong>std::unordered_map</strong>, using various instantiations.
<p>
<h2>TYPE</h2>
<p>
All variants define <em>value_type</em> as the corresponding <em>unordered_map
value_type</em>. In practice a <em>value_type</em> defines a <em>std::pair&lt;Key, Value&gt;</em>,
where <em>Key</em> represents the hash's key-type and <em>Value</em> represents the
hash's value type.
<p>
<h2>CONSTRUCTORS</h2>
<p>
Variants of the <em>FBB::Hash</em> container are available for <em>char const *</em>
or <em>std::string</em> keys, used case sensitively or case insensitively. All
variants support default, copy, and move construction, support 
construction from initializer
lists and support construction from iterators defining a half-open range of
<em>value_type</em> values.
<p>
The following variants are available (showing their default
constructors). <em>Value</em> refers to the value type stored in the hash table.
<p>
<ul>
    <li> <strong>HashCharPtr&lt;Value&gt;()</strong>:<br> this hash table uses <em>case sensitive</em> <strong>char
const *</strong> keys;
<p>
<li> <strong>HashCharCasePtr&lt;Value&gt;()</strong>:<br> this hash table uses <em>case insensitive</em>
<strong>char const *</strong> keys;
<p>
<li> <strong>HashString&lt;Value&gt;()</strong>:<br> this hash table uses <em>case sensitive</em>
<strong>std::string</strong> keys;
<p>
<li> <strong>HashStringCase&lt;Value&gt;()</strong>:<br>  this hash table uses <em>case insensitive</em>
<strong>std::string</strong> keys;
    </ul>
<p>
<h2>OVERLOADED OPERATOR</h2>
     In addition to the index operator inherited from <em>unordered_map</em> the
overloaded copy and move assignment operators are available for all <em>Hash</em>
containers.
<p>
<h2>MEMBER FUNCTIONS</h2>
     All members of the <em>unordered_map</em> container are available, as <em>Hash</em>
inherits from this template class.
<p>
<h2>EXAMPLE</h2>
        <pre>

    #include &lt;iostream&gt;
    #include &lt;bobcat/hash&gt;
    
    using namespace std;
    using namespace FBB;
    
    pair&lt;char const *, size_t&gt; ap[] =
    {
        pair&lt;char const *, size_t&gt;("one", 1),
        pair&lt;char const *, size_t&gt;("two", 2),
    };
    
    int main()
    {
        HashCharPtr&lt;size_t&gt; hcp;
        HashCharPtr&lt;size_t&gt; hcp2(ap, ap + 2);
        HashCharPtr&lt;size_t&gt; hcp3(hcp2);

        hcp = hcp2;
    
        cout &lt;&lt; hcp2["one"] &lt;&lt; endl;
    }
        
</pre>

<p>
<h2>FILES</h2>
    <em>bobcat/hash</em> - defines the class interface
<p>
<h2>SEE ALSO</h2>
    <strong>bobcat</strong>(7)
<p>
<h2>BUGS</h2>
    None Reported.
<p>

<h2>DISTRIBUTION FILES</h2>
    <ul>
    <li> <em>bobcat_2.20.01-x.dsc</em>: detached signature;
    <li> <em>bobcat_2.20.01-x.tar.gz</em>: source archive;
    <li> <em>bobcat_2.20.01-x_i386.changes</em>: change log;
    <li> <em>libbobcat1_2.20.01-x_*.deb</em>: debian package holding the
            libraries;
    <li> <em>libbobcat1-dev_2.20.01-x_*.deb</em>: debian package holding the
            libraries, headers and manual pages;
    <li> <em>http://sourceforge.net/projects/bobcat</em>: public archive location;
    </ul>
<p>
<h2>BOBCAT</h2>
    Bobcat is an acronym of `Brokken's Own Base Classes And Templates'.
<p>
<h2>COPYRIGHT</h2>
    This is free software, distributed under the terms of the 
    GNU General Public License (GPL).
<p>
<h2>AUTHOR</h2>
    Frank B. Brokken (<strong>f.b.brokken@rug.nl</strong>).
<p>

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