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121 lines
5.7 KiB
121 lines
5.7 KiB
13 years ago
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/doc/qptrlist.doc:1044 -->
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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<title>TQStrList Class</title>
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<font color="#004faf">Home</font></a>
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<font color="#004faf">All Classes</font></a>
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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>TQStrList Class Reference</h1>
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<p>The TQStrList class provides a doubly-linked list of char*.
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<a href="#details">More...</a>
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<p><tt>#include <<a href="qstrlist-h.html">qstrlist.h</a>></tt>
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<p>Inherits <a href="qptrlist.html">TQPtrList</a><char>.
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<p>Inherited by <a href="qstrilist.html">TQStrIList</a>.
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<p><a href="qstrlist-members.html">List of all member functions.</a>
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<h2>Public Members</h2>
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<ul>
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<li class=fn><a href="#TQStrList"><b>TQStrList</b></a> ( bool deepCopies = TRUE )</li>
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<li class=fn><a href="#TQStrList-2"><b>TQStrList</b></a> ( const TQStrList & list )</li>
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<li class=fn><a href="#~TQStrList"><b>~TQStrList</b></a> ()</li>
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<li class=fn>TQStrList & <a href="#operator-eq"><b>operator=</b></a> ( const TQStrList & list )</li>
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</ul>
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<hr><a name="details"></a><h2>Detailed Description</h2>
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The TQStrList class provides a doubly-linked list of char*.
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<p>
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<p> If you want a string list of <a href="qstring.html">TQString</a>s use <a href="qstringlist.html">TQStringList</a>.
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<p> This class is a <a href="qptrlist.html">TQPtrList</a><char> instance (a list of char*).
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<p> TQStrList can make deep or shallow copies of the strings that are
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inserted.
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<p> A <a href="shclass.html#deep-copy">deep copy</a> means that memory is allocated for the string and then
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the string data is copied into that memory. A <a href="shclass.html#shallow-copy">shallow copy</a> is just
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a copy of the pointer value and not of the string data itself.
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<p> The disadvantage of shallow copies is that because a pointer can
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be deleted only once, the program must put all strings in a
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central place and know when it is safe to delete them (i.e. when
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the strings are no longer referenced by other parts of the
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program). This can make the program more complex. The advantage of
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shallow copies is that they consume far less memory than deep
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copies. It is also much faster to copy a pointer (typically 4 or 8
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bytes) than to copy string data.
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<p> A TQStrList that operates on deep copies will, by default, turn on
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auto-deletion (see <a href="qptrcollection.html#setAutoDelete">setAutoDelete</a>()). Thus, by default TQStrList
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will deallocate any string copies it allocates.
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<p> The virtual <a href="qptrlist.html#compareItems">compareItems</a>() function is reimplemented and does a
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case-sensitive string comparison. The <a href="qptrlist.html#inSort">inSort</a>() function will
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insert strings in sorted order. In general it is fastest to insert
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the strings as they come and <a href="qptrlist.html#sort">sort</a>() at the end; inSort() is useful
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when you just have to add a few extra strings to an already sorted
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list.
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<p> The <a href="qstrlistiterator.html">TQStrListIterator</a> class is an iterator for TQStrList.
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<p>See also <a href="collection.html">Collection Classes</a>, <a href="text.html">Text Related Classes</a>, and <a href="tools.html">Non-GUI Classes</a>.
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<hr><h2>Member Function Documentation</h2>
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<h3 class=fn><a name="TQStrList"></a>TQStrList::TQStrList ( bool deepCopies = TRUE )
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</h3>
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<p> Constructs an empty list of strings. Will make deep copies of all
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inserted strings if <em>deepCopies</em> is TRUE, or use shallow copies
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if <em>deepCopies</em> is FALSE.
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<h3 class=fn><a name="TQStrList-2"></a>TQStrList::TQStrList ( const <a href="qstrlist.html">TQStrList</a> & list )
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</h3>
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<p> Constructs a copy of <em>list</em>.
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<p> If <em>list</em> has deep copies, this list will also get deep copies.
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Only the pointers are copied (shallow copy) if the other list does
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not use deep copies.
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<h3 class=fn><a name="~TQStrList"></a>TQStrList::~TQStrList ()
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</h3>
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<p> Destroys the list. All strings are removed.
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<h3 class=fn><a href="qstrlist.html">TQStrList</a> & <a name="operator-eq"></a>TQStrList::operator= ( const <a href="qstrlist.html">TQStrList</a> & list )
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</h3>
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<p> Assigns <em>list</em> to this list and returns a reference to this list.
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<p> If <em>list</em> has deep copies, this list will also get deep copies.
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Only the pointers are copied (shallow copy) if the other list does
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not use deep copies.
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<!-- eof -->
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<hr><p>
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This file is part of the <a href="index.html">TQt toolkit</a>.
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Copyright © 1995-2007
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<a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center>
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<table width=100% cellspacing=0 border=0><tr>
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<td>Copyright © 2007
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<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
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<td align=right><div align=right>TQt 3.3.8</div>
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</table></div></address></body>
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</html>
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