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    <head>
    <title>NSMapTable class reference</title>
  </head>
  <body>
    <font face="serif">
    <a href="Base.html">Up</a>
    <br />
    <h1><a name="title$NSMapTable">NSMapTable class reference</a></h1>
    <h3>Authors</h3>
    <dl>
      <dt>Richard Frith-Macdonald (<a href="mailto:rfm@gnu.org"><code>rfm@gnu.org</code></a>)</dt>
      <dd>
      </dd>
    </dl>
    <p><b>Copyright:</b> (C) 2009 Free Software Foundation, Inc.</p>

        <div>
    </div>

          <h1><a name="001000000000">
        Software documentation for the NSMapTable class
      </a></h1>
    <h2><a name="class$NSMapTable">NSMapTable</a> : <a rel="gsdoc" href="NSObject.html#class$NSObject">NSObject</a></h2>
    <blockquote class="declared">
      <dl>
        <dt><b>Declared in:</b></dt>
        <dd>Foundation/NSMapTable.h</dd>
      </dl>
    </blockquote>
    <blockquote>
      <dl>
        <dt><b>Conforms to:</b></dt>
        <dd><a rel="gsdoc" href="NSObject.html#protocol$(NSCopying)">NSCopying</a></dd>
        <dd><a rel="gsdoc" href="NSObject.html#protocol$(NSCoding)">NSCoding</a></dd>
        <dd><a rel="gsdoc" href="NSEnumerator.html#protocol$(NSFastEnumeration)">NSFastEnumeration</a></dd>
      </dl>
    </blockquote>
    <div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
    <div class="desc">
      
          <em>Description forthcoming.</em>
        
    </div>
    <b>Method summary</b>
    <ul>
      <li><a rel="gsdoc" href="NSMapTable.html#method$NSMapTable+mapTableWithKeyOptions$valueOptions$">+mapTableWithKeyOptions:valueOptions:</a></li>
      <li><a rel="gsdoc" href="NSMapTable.html#method$NSMapTable+mapTableWithStrongToStrongObjects">+mapTableWithStrongToStrongObjects</a></li>
      <li><a rel="gsdoc" href="NSMapTable.html#method$NSMapTable+mapTableWithStrongToWeakObjects">+mapTableWithStrongToWeakObjects</a></li>
      <li><a rel="gsdoc" href="NSMapTable.html#method$NSMapTable+mapTableWithWeakToStrongObjects">+mapTableWithWeakToStrongObjects</a></li>
      <li><a rel="gsdoc" href="NSMapTable.html#method$NSMapTable+mapTableWithWeakToWeakObjects">+mapTableWithWeakToWeakObjects</a></li>
      <li><a rel="gsdoc" href="NSMapTable.html#method$NSMapTable+strongToStrongObjectsMapTable">+strongToStrongObjectsMapTable</a></li>
      <li><a rel="gsdoc" href="NSMapTable.html#method$NSMapTable+strongToWeakObjectsMapTable">+strongToWeakObjectsMapTable</a></li>
      <li><a rel="gsdoc" href="NSMapTable.html#method$NSMapTable+weakToStrongObjectsMapTable">+weakToStrongObjectsMapTable</a></li>
      <li><a rel="gsdoc" href="NSMapTable.html#method$NSMapTable+weakToWeakObjectsMapTable">+weakToWeakObjectsMapTable</a></li>
      <li><a rel="gsdoc" href="NSMapTable.html#method$NSMapTable-count">-count</a></li>
      <li><a rel="gsdoc" href="NSMapTable.html#method$NSMapTable-dictionaryRepresentation">-dictionaryRepresentation</a></li>
      <li><a rel="gsdoc" href="NSMapTable.html#method$NSMapTable-initWithKeyOptions$valueOptions$capacity$">-initWithKeyOptions:valueOptions:capacity:</a></li>
      <li><a rel="gsdoc" href="NSMapTable.html#method$NSMapTable-initWithKeyPointerFunctions$valuePointerFunctions$capacity$">-initWithKeyPointerFunctions:valuePointerFunctions:capacity:</a></li>
      <li><a rel="gsdoc" href="NSMapTable.html#method$NSMapTable-keyEnumerator">-keyEnumerator</a></li>
      <li><a rel="gsdoc" href="NSMapTable.html#method$NSMapTable-keyPointerFunctions">-keyPointerFunctions</a></li>
      <li><a rel="gsdoc" href="NSMapTable.html#method$NSMapTable-objectEnumerator">-objectEnumerator</a></li>
      <li><a rel="gsdoc" href="NSMapTable.html#method$NSMapTable-objectForKey$">-objectForKey:</a></li>
      <li><a rel="gsdoc" href="NSMapTable.html#method$NSMapTable-removeAllObjects">-removeAllObjects</a></li>
      <li><a rel="gsdoc" href="NSMapTable.html#method$NSMapTable-removeObjectForKey$">-removeObjectForKey:</a></li>
      <li><a rel="gsdoc" href="NSMapTable.html#method$NSMapTable-setObject$forKey$">-setObject:forKey:</a></li>
      <li><a rel="gsdoc" href="NSMapTable.html#method$NSMapTable-valuePointerFunctions">-valuePointerFunctions</a></li>
    </ul>
    <hr width="50%" align="left" />
<div class="method">
    <h3><a name="method$NSMapTable+mapTableWithKeyOptions$valueOptions$">mapTableWithKeyOptions:&nbsp;valueOptions:&nbsp;</a></h3>
    + (id) <b>mapTableWithKeyOptions:</b> (<a rel="gsdoc" href="TypesAndConstants.html#type$NSPointerFunctionsOptions">NSPointerFunctionsOptions</a>)keyOptions<b> valueOptions:</b> (<a rel="gsdoc" href="TypesAndConstants.html#type$NSPointerFunctionsOptions">NSPointerFunctionsOptions</a>)valueOptions;<br />
    <div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
    <div class="desc">
      
            Return a map table initialised using the specified
            options for keys and values.
          
    </div>
    <hr width="25%" align="left" />
</div>
<div class="method">
    <h3><a name="method$NSMapTable+mapTableWithStrongToStrongObjects">mapTableWithStrongToStrongObjects&nbsp;</a></h3>
    + (id) <b>mapTableWithStrongToStrongObjects</b>;<br />
    <div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
    <div class="desc">
      
            Convenience method for creating a map table to
            store object values using object keys.
          
    </div>
    <hr width="25%" align="left" />
</div>
<div class="method">
    <h3><a name="method$NSMapTable+mapTableWithStrongToWeakObjects">mapTableWithStrongToWeakObjects&nbsp;</a></h3>
    + (id) <b>mapTableWithStrongToWeakObjects</b>;<br />
    <div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
    <div class="desc">
      
            Convenience method for creating a map table to
            store non-retained object values with retained object
            keys.
          
    </div>
    <hr width="25%" align="left" />
</div>
<div class="method">
    <h3><a name="method$NSMapTable+mapTableWithWeakToStrongObjects">mapTableWithWeakToStrongObjects&nbsp;</a></h3>
    + (id) <b>mapTableWithWeakToStrongObjects</b>;<br />
    <div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
    <div class="desc">
      
            Convenience method for creating a map table to
            store retained object values with non-retained object
            keys.
          
    </div>
    <hr width="25%" align="left" />
</div>
<div class="method">
    <h3><a name="method$NSMapTable+mapTableWithWeakToWeakObjects">mapTableWithWeakToWeakObjects&nbsp;</a></h3>
    + (id) <b>mapTableWithWeakToWeakObjects</b>;<br />
    <div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
    <div class="desc">
      
            Convenience method for creating a map table to
            store non-retained object values with non-retained
            object keys.
          
    </div>
    <hr width="25%" align="left" />
</div>
<div class="method">
    <h3><a name="method$NSMapTable+strongToStrongObjectsMapTable">strongToStrongObjectsMapTable&nbsp;</a></h3>
    + (id) <b>strongToStrongObjectsMapTable</b>;<br />
    <div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
    <div class="desc">
      
            Convenience method for creating a map table to
            store object values using object keys. The collection
            will retain both the key and the value.
          
    </div>
    <hr width="25%" align="left" />
</div>
<div class="method">
    <h3><a name="method$NSMapTable+strongToWeakObjectsMapTable">strongToWeakObjectsMapTable&nbsp;</a></h3>
    + (id) <b>strongToWeakObjectsMapTable</b>;<br />
    <div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
    <div class="desc">
      
            Convenience method for creating a map table to
            store object values using object keys. The collection
            will retain the key, the value will be a zeroing weak
            reference.
          
    </div>
    <hr width="25%" align="left" />
</div>
<div class="method">
    <h3><a name="method$NSMapTable+weakToStrongObjectsMapTable">weakToStrongObjectsMapTable&nbsp;</a></h3>
    + (id) <b>weakToStrongObjectsMapTable</b>;<br />
    <div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
    <div class="desc">
      
            Convenience method for creating a map table to
            store object values using object keys. The collection
            will retain the value, the key will be a zeroing weak
            reference.
          
    </div>
    <hr width="25%" align="left" />
</div>
<div class="method">
    <h3><a name="method$NSMapTable+weakToWeakObjectsMapTable">weakToWeakObjectsMapTable&nbsp;</a></h3>
    + (id) <b>weakToWeakObjectsMapTable</b>;<br />
    <div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
    <div class="desc">
      
            Convenience method for creating a map table to
            store object values using object keys. The collection
            will use zeroing weak references for both the key and
            the value.
          
    </div>
    <hr width="25%" align="left" />
</div>
<div class="method">
    <h3><a name="method$NSMapTable-count">count&nbsp;</a></h3>
    - (<a rel="gsdoc" href="TypesAndConstants.html#type$NSUInteger">NSUInteger</a>) <b>count</b>;<br />
    <div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
    <div class="desc">
      
            Return the number of items stored in the map.
          
    </div>
    <hr width="25%" align="left" />
</div>
<div class="method">
    <h3><a name="method$NSMapTable-dictionaryRepresentation">dictionaryRepresentation&nbsp;</a></h3>
    - (<a rel="gsdoc" href="NSDictionary.html#class$NSDictionary">NSDictionary</a>*) <b>dictionaryRepresentation</b>;<br />
    <div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
    <div class="desc">
      
            Return a dictionary containing the keys and values
            in the receiver.
          
    </div>
    <hr width="25%" align="left" />
</div>
<div class="method">
    <h3><a name="method$NSMapTable-initWithKeyOptions$valueOptions$capacity$">initWithKeyOptions:&nbsp;valueOptions:&nbsp;capacity:&nbsp;</a></h3>
    - (id) <b>initWithKeyOptions:</b> (<a rel="gsdoc" href="TypesAndConstants.html#type$NSPointerFunctionsOptions">NSPointerFunctionsOptions</a>)keyOptions<b> valueOptions:</b> (<a rel="gsdoc" href="TypesAndConstants.html#type$NSPointerFunctionsOptions">NSPointerFunctionsOptions</a>)valueOptions<b> capacity:</b> (<a rel="gsdoc" href="TypesAndConstants.html#type$NSUInteger">NSUInteger</a>)initialCapacity;<br />
    <div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
    <div class="desc">
      
            Initialiser using option bitmasks to describe
            the keys and values.
          
    </div>
    <hr width="25%" align="left" />
</div>
<div class="method">
    <h3><a name="method$NSMapTable-initWithKeyPointerFunctions$valuePointerFunctions$capacity$">initWithKeyPointerFunctions:&nbsp;valuePointerFunctions:&nbsp;capacity:&nbsp;</a></h3>
    - (id) <b>initWithKeyPointerFunctions:</b> (<a rel="gsdoc" href="NSPointerFunctions.html#class$NSPointerFunctions">NSPointerFunctions</a>*)keyFunctions<b> valuePointerFunctions:</b> (<a rel="gsdoc" href="NSPointerFunctions.html#class$NSPointerFunctions">NSPointerFunctions</a>*)valueFunctions<b> capacity:</b> (<a rel="gsdoc" href="TypesAndConstants.html#type$NSUInteger">NSUInteger</a>)initialCapacity;<br />
    <div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
    <div class="desc">
      
            Initialiser using full pointer function
            information to describe the keys and values.
          
    </div>
    <hr width="25%" align="left" />
</div>
<div class="method">
    <h3><a name="method$NSMapTable-keyEnumerator">keyEnumerator&nbsp;</a></h3>
    - (<a rel="gsdoc" href="NSEnumerator.html#class$NSEnumerator">NSEnumerator</a>*) <b>keyEnumerator</b>;<br />
    <div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
    <div class="desc">
      
            Return an enumerator able to enumerate the keys in
            the receiver.
          
    </div>
    <hr width="25%" align="left" />
</div>
<div class="method">
    <h3><a name="method$NSMapTable-keyPointerFunctions">keyPointerFunctions&nbsp;</a></h3>
    - (<a rel="gsdoc" href="NSPointerFunctions.html#class$NSPointerFunctions">NSPointerFunctions</a>*) <b>keyPointerFunctions</b>;<br />
    <div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
    <div class="desc">
      
            Return an NSPointerFunctions value describind the
            functions used by the receiver to handle keys.
          
    </div>
    <hr width="25%" align="left" />
</div>
<div class="method">
    <h3><a name="method$NSMapTable-objectEnumerator">objectEnumerator&nbsp;</a></h3>
    - (<a rel="gsdoc" href="NSEnumerator.html#class$NSEnumerator">NSEnumerator</a>*) <b>objectEnumerator</b>;<br />
    <div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
    <div class="desc">
      
            Return an enumerator able to enumerate the values in
            the receiver.
          
    </div>
    <hr width="25%" align="left" />
</div>
<div class="method">
    <h3><a name="method$NSMapTable-objectForKey$">objectForKey:&nbsp;</a></h3>
    - (id) <b>objectForKey:</b> (id)aKey;<br />
    <div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
    <div class="desc">
      
            Return the object stored under the specified key.
          
    </div>
    <hr width="25%" align="left" />
</div>
<div class="method">
    <h3><a name="method$NSMapTable-removeAllObjects">removeAllObjects&nbsp;</a></h3>
    - (void) <b>removeAllObjects</b>;<br />
    <div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
    <div class="desc">
      
            Empty the receiver of all stored values.
          
    </div>
    <hr width="25%" align="left" />
</div>
<div class="method">
    <h3><a name="method$NSMapTable-removeObjectForKey$">removeObjectForKey:&nbsp;</a></h3>
    - (void) <b>removeObjectForKey:</b> (id)aKey;<br />
    <div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
    <div class="desc">
      
            Remove the object stored under the specified key.
          
    </div>
    <hr width="25%" align="left" />
</div>
<div class="method">
    <h3><a name="method$NSMapTable-setObject$forKey$">setObject:&nbsp;forKey:&nbsp;</a></h3>
    - (void) <b>setObject:</b> (id)anObject<b> forKey:</b> (id)aKey;<br />
    <div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
    <div class="desc">
      
            Store the object under the specified key, replacing
            any object which was previously stored under that key.
          
    </div>
    <hr width="25%" align="left" />
</div>
<div class="method">
    <h3><a name="method$NSMapTable-valuePointerFunctions">valuePointerFunctions&nbsp;</a></h3>
    - (<a rel="gsdoc" href="NSPointerFunctions.html#class$NSPointerFunctions">NSPointerFunctions</a>*) <b>valuePointerFunctions</b>;<br />
    <div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
    <div class="desc">
      
            Return an NSPointerFunctions value describind the
            functions used by the receiver to handle values.
          
    </div>
    <hr width="25%" align="left" />
</div>
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