diff options
Diffstat (limited to 'doc/html/qstringlist.html')
| -rw-r--r-- | doc/html/qstringlist.html | 309 |
1 files changed, 309 insertions, 0 deletions
diff --git a/doc/html/qstringlist.html b/doc/html/qstringlist.html new file mode 100644 index 000000000..21e5caddf --- /dev/null +++ b/doc/html/qstringlist.html @@ -0,0 +1,309 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> +<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/src/tools/qstringlist.cpp:46 --> +<html> +<head> +<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> +<title>TQStringList Class</title> +<style type="text/css"><!-- +fn { margin-left: 1cm; text-indent: -1cm; } +a:link { color: #004faf; text-decoration: none } +a:visited { color: #672967; text-decoration: none } +body { background: #ffffff; color: black; } +--></style> +</head> +<body> + +<table border="0" cellpadding="0" cellspacing="0" width="100%"> +<tr bgcolor="#E5E5E5"> +<td valign=center> + <a href="index.html"> +<font color="#004faf">Home</font></a> + | <a href="classes.html"> +<font color="#004faf">All Classes</font></a> + | <a href="mainclasses.html"> +<font color="#004faf">Main Classes</font></a> + | <a href="annotated.html"> +<font color="#004faf">Annotated</font></a> + | <a href="groups.html"> +<font color="#004faf">Grouped Classes</font></a> + | <a href="functions.html"> +<font color="#004faf">Functions</font></a> +</td> +<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>TQStringList Class Reference</h1> + +<p>The TQStringList class provides a list of strings. +<a href="#details">More...</a> +<p>All the functions in this class are <a href="threads.html#reentrant">reentrant</a> when TQt is built with thread support.</p> +<p><tt>#include <<a href="qstringlist-h.html">qstringlist.h</a>></tt> +<p>Inherits <a href="qvaluelist.html">TQValueList</a><TQString>. +<p><a href="qstringlist-members.html">List of all member functions.</a> +<h2>Public Members</h2> +<ul> +<li class=fn><a href="#TQStringList"><b>TQStringList</b></a> ()</li> +<li class=fn><a href="#TQStringList-2"><b>TQStringList</b></a> ( const TQStringList & l )</li> +<li class=fn><a href="#TQStringList-3"><b>TQStringList</b></a> ( const TQValueList<TQString> & l )</li> +<li class=fn><a href="#TQStringList-4"><b>TQStringList</b></a> ( const TQString & i )</li> +<li class=fn><a href="#TQStringList-5"><b>TQStringList</b></a> ( const char * i )</li> +<li class=fn>void <a href="#sort"><b>sort</b></a> ()</li> +<li class=fn>TQString <a href="#join"><b>join</b></a> ( const TQString & sep ) const</li> +<li class=fn>TQStringList <a href="#grep"><b>grep</b></a> ( const TQString & str, bool cs = TRUE ) const</li> +<li class=fn>TQStringList <a href="#grep-2"><b>grep</b></a> ( const TQRegExp & rx ) const</li> +<li class=fn>TQStringList & <a href="#gres"><b>gres</b></a> ( const TQString & before, const TQString & after, bool cs = TRUE )</li> +<li class=fn>TQStringList & <a href="#gres-2"><b>gres</b></a> ( const TQRegExp & rx, const TQString & after )</li> +</ul> +<h2>Static Public Members</h2> +<ul> +<li class=fn>TQStringList <a href="#fromStrList"><b>fromStrList</b></a> ( const TQStrList & ascii )</li> +<li class=fn>TQStringList <a href="#split-2"><b>split</b></a> ( const TQString & sep, const TQString & str, bool allowEmptyEntries = FALSE )</li> +<li class=fn>TQStringList <a href="#split-3"><b>split</b></a> ( const TQChar & sep, const TQString & str, bool allowEmptyEntries = FALSE )</li> +<li class=fn>TQStringList <a href="#split"><b>split</b></a> ( const TQRegExp & sep, const TQString & str, bool allowEmptyEntries = FALSE )</li> +</ul> +<hr><a name="details"></a><h2>Detailed Description</h2> + + + +The TQStringList class provides a list of strings. +<p> + + + +<p> It is used to store and manipulate strings that logically belong +together. Essentially TQStringList is a <a href="qvaluelist.html">TQValueList</a> of <a href="qstring.html">TQString</a> +objects. Unlike <a href="qstrlist.html">TQStrList</a>, which stores pointers to characters, +TQStringList holds real TQString objects. It is the class of choice +whenever you work with Unicode strings. TQStringList is part of the +<a href="qtl.html">TQt Template Library</a>. +<p> Like TQString itself, TQStringList objects are <a href="shclass.html#implicitly-shared">implicitly shared</a>, so +passing them around as value-parameters is both fast and safe. +<p> Strings can be added to a list using <a href="qvaluelist.html#append">append</a>(), <a href="qvaluelist.html#operator+-eq">operator+=</a>() or +<a href="qvaluelist.html#operator-lt-lt">operator<<</a>(), e.g. +<pre> + TQStringList fonts; + fonts.<a href="qvaluelist.html#append">append</a>( "Times" ); + fonts += "Courier"; + fonts += "Courier New"; + fonts << "Helvetica [Cronyx]" << "Helvetica [Adobe]"; + </pre> + +<p> String lists have an iterator, TQStringList::Iterator(), e.g. +<pre> + for ( TQStringList::<a href="qvaluelist.html#Iterator">Iterator</a> it = fonts.begin(); it != fonts.end(); ++it ) { + cout << *it << ":"; + } + cout << endl; + // Output: + // Times:Courier:Courier New:Helvetica [Cronyx]:Helvetica [Adobe]: + </pre> + +<p> Many TQt functions return string lists by value; to iterate over +these you should make a copy and iterate over the copy. +<p> You can concatenate all the strings in a string list into a single +string (with an optional separator) using <a href="#join">join</a>(), e.g. +<pre> + <a href="qstring.html">TQString</a> allFonts = fonts.join( ", " ); + cout << allFonts << endl; + // Output: + // Times, Courier, Courier New, Helvetica [Cronyx], Helvetica [Adobe] + </pre> + +<p> You can sort the list with <a href="#sort">sort</a>(), and extract a new list which +contains only those strings which contain a particular substring +(or match a particular <a href="qregexp.html#regular-expression">regular expression</a>) using the <a href="#grep">grep</a>() +functions, e.g. +<pre> + fonts.sort(); + cout << fonts.join( ", " ) << endl; + // Output: + // Courier, Courier New, Helvetica [Adobe], Helvetica [Cronyx], Times + + TQStringList helveticas = fonts.grep( "Helvetica" ); + cout << helveticas.<a href="#join">join</a>( ", " ) << endl; + // Output: + // Helvetica [Adobe], Helvetica [Cronyx] + </pre> + +<p> Existing strings can be split into string lists with character, +string or regular expression separators, e.g. +<pre> + <a href="qstring.html">TQString</a> s = "Red\tGreen\tBlue"; + TQStringList colors = TQStringList::<a href="#split">split</a>( "\t", s ); + cout << colors.<a href="#join">join</a>( ", " ) << endl; + // Output: + // Red, Green, Blue + </pre> + +<p>See also <a href="shared.html">Implicitly and Explicitly Shared Classes</a>, <a href="text.html">Text Related Classes</a>, and <a href="tools.html">Non-GUI Classes</a>. + +<hr><h2>Member Function Documentation</h2> +<h3 class=fn><a name="TQStringList"></a>TQStringList::TQStringList () +</h3> + +<p> Creates an empty string list. + +<h3 class=fn><a name="TQStringList-2"></a>TQStringList::TQStringList ( const <a href="qstringlist.html">TQStringList</a> & l ) +</h3> + +<p> Creates a copy of the list <em>l</em>. This function is very fast +because TQStringList is <a href="shclass.html#implicitly-shared">implicitly shared</a>. In most situations this +acts like a <a href="shclass.html#deep-copy">deep copy</a>, for example, if this list or the original +one or some other list referencing the same shared data is +modified, the modifying list first makes a copy, i.e. +copy-on-write. +In a threaded environment you may retquire a real deep copy +. + +<h3 class=fn><a name="TQStringList-3"></a>TQStringList::TQStringList ( const <a href="qvaluelist.html">TQValueList</a><TQString> & l ) +</h3> + +<p> Constructs a new string list that is a copy of <em>l</em>. + +<h3 class=fn><a name="TQStringList-4"></a>TQStringList::TQStringList ( const <a href="qstring.html">TQString</a> & i ) +</h3> + +<p> Constructs a string list consisting of the single string <em>i</em>. +Longer lists are easily created as follows: +<p> <pre> + TQStringList items; + items << "Buy" << "Sell" << "Update" << "Value"; + </pre> + + +<h3 class=fn><a name="TQStringList-5"></a>TQStringList::TQStringList ( const char * i ) +</h3> + +<p> Constructs a string list consisting of the single Latin-1 string <em>i</em>. + +<h3 class=fn><a href="qstringlist.html">TQStringList</a> <a name="fromStrList"></a>TQStringList::fromStrList ( const <a href="qstrlist.html">TQStrList</a> & ascii )<tt> [static]</tt> +</h3> +Converts from an ASCII-TQStrList <em>ascii</em> to a TQStringList (Unicode). + +<h3 class=fn><a href="qstringlist.html">TQStringList</a> <a name="grep"></a>TQStringList::grep ( const <a href="qstring.html">TQString</a> & str, bool cs = TRUE ) const +</h3> +Returns a list of all the strings containing the substring <em>str</em>. +<p> If <em>cs</em> is TRUE, the grep is done case-sensitively; otherwise +case is ignored. +<p> <pre> + TQStringList list; + list << "Bill Gates" << "John Doe" << "Bill Clinton"; + list = list.<a href="#grep">grep</a>( "Bill" ); + // list == ["Bill Gates", "Bill Clinton"] + </pre> + +<p> <p>See also <a href="qstring.html#find">TQString::find</a>(). + +<h3 class=fn><a href="qstringlist.html">TQStringList</a> <a name="grep-2"></a>TQStringList::grep ( const <a href="qregexp.html">TQRegExp</a> & rx ) const +</h3> +This is an overloaded member function, provided for convenience. It behaves essentially like the above function. +<p> Returns a list of all the strings that match the <a href="qregexp.html#regular-expression">regular expression</a> <em>rx</em>. +<p> <p>See also <a href="qstring.html#find">TQString::find</a>(). + +<h3 class=fn><a href="qstringlist.html">TQStringList</a> & <a name="gres"></a>TQStringList::gres ( const <a href="qstring.html">TQString</a> & before, const <a href="qstring.html">TQString</a> & after, bool cs = TRUE ) +</h3> +Replaces every occurrence of the string <em>before</em> in the strings +that constitute the string list with the string <em>after</em>. Returns +a reference to the string list. +<p> If <em>cs</em> is TRUE, the search is case sensitive; otherwise the +search is case insensitive. +<p> Example: +<pre> + TQStringList list; + list << "alpha" << "beta" << "gamma" << "epsilon"; + list.<a href="#gres">gres</a>( "a", "o" ); + // list == ["olpho", "beto", "gommo", "epsilon"] + </pre> + +<p> <p>See also <a href="qstring.html#replace">TQString::replace</a>(). + +<h3 class=fn><a href="qstringlist.html">TQStringList</a> & <a name="gres-2"></a>TQStringList::gres ( const <a href="qregexp.html">TQRegExp</a> & rx, const <a href="qstring.html">TQString</a> & after ) +</h3> +This is an overloaded member function, provided for convenience. It behaves essentially like the above function. +<p> Replaces every occurrence of the regexp <em>rx</em> in the string +with <em>after</em>. Returns a reference to the string list. +<p> Example: +<pre> + TQStringList list; + list << "alpha" << "beta" << "gamma" << "epsilon"; + list.<a href="#gres">gres</a>( TQRegExp("^a"), "o" ); + // list == ["olpha", "beta", "gamma", "epsilon"] + </pre> + +<p> For regexps containing <a href="qregexp.html#capturing-text">capturing parentheses</a>, occurrences of <b>\1</b>, +<b>\2</b>, ..., in <em>after</em> are replaced with <em>rx</em>.cap(1), +cap(2), ... +<p> Example: +<pre> + TQStringList list; + list << "Bill Clinton" << "Gates, Bill"; + list.<a href="#gres">gres</a>( TQRegExp("^(.*), (.*)$"), "\\2 \\1" ); + // list == ["Bill Clinton", "Bill Gates"] + </pre> + +<p> <p>See also <a href="qstring.html#replace">TQString::replace</a>(). + +<h3 class=fn><a href="qstring.html">TQString</a> <a name="join"></a>TQStringList::join ( const <a href="qstring.html">TQString</a> & sep ) const +</h3> +Joins the string list into a single string with each element +separated by the string <em>sep</em> (which can be empty). +<p> <p>See also <a href="#split">split</a>(). + +<p>Examples: <a href="fileiconview-example.html#x872">fileiconview/qfileiconview.cpp</a> and <a href="toplevel-example.html#x2533">toplevel/options.ui.h</a>. +<h3 class=fn>void <a name="sort"></a>TQStringList::sort () +</h3> +Sorts the list of strings in ascending case-sensitive order. +<p> Sorting is very fast. It uses the <a href="qtl.html">TQt Template + Library's</a> efficient HeapSort implementation that has a +time complexity of O(n*log n). +<p> If you want to sort your strings in an arbitrary order consider +using a <a href="qmap.html">TQMap</a>. For example you could use a TQMap<TQString,TQString> +to create a case-insensitive ordering (e.g. mapping the lowercase +text to the text), or a TQMap<int,TQString> to sort the strings by +some integer index, etc. + +<p>Example: <a href="themes-example.html#x341">themes/themes.cpp</a>. +<h3 class=fn><a href="qstringlist.html">TQStringList</a> <a name="split"></a>TQStringList::split ( const <a href="qregexp.html">TQRegExp</a> & sep, const <a href="qstring.html">TQString</a> & str, bool allowEmptyEntries = FALSE )<tt> [static]</tt> +</h3> +Splits the string <em>str</em> into strings wherever the <a href="qregexp.html#regular-expression">regular expression</a> <em>sep</em> occurs, and returns the list of those strings. +<p> If <em>allowEmptyEntries</em> is TRUE, a null string is inserted in +the list wherever the separator matches twice without intervening +text. +<p> For example, if you split the string "a,,b,c" on commas, <a href="#split">split</a>() +returns the three-item list "a", "b", "c" if <em>allowEmptyEntries</em> +is FALSE (the default), and the four-item list "a", "", "b", "c" +if <em>allowEmptyEntries</em> is TRUE. +<p> If <em>sep</em> does not match anywhere in <em>str</em>, split() returns a +single element list with the element containing the single string +<em>str</em>. +<p> <p>See also <a href="#join">join</a>() and <a href="qstring.html#section">TQString::section</a>(). + +<p>Examples: <a href="tutorial2-03.html#x2552">chart/element.cpp</a>, <a href="dirview-example.html#x1703">dirview/dirview.cpp</a>, and <a href="httpd-example.html#x733">network/httpd/httpd.cpp</a>. +<h3 class=fn><a href="qstringlist.html">TQStringList</a> <a name="split-2"></a>TQStringList::split ( const <a href="qstring.html">TQString</a> & sep, const <a href="qstring.html">TQString</a> & str, bool allowEmptyEntries = FALSE )<tt> [static]</tt> +</h3> +This is an overloaded member function, provided for convenience. It behaves essentially like the above function. +<p> This version of the function uses a <a href="qstring.html">TQString</a> as separator, rather +than a <a href="qregexp.html#regular-expression">regular expression</a>. +<p> If <em>sep</em> is an empty string, the return value is a list of +one-character strings: <a href="#split">split</a>( TQString( "" ), "four" ) returns the +four-item list, "f", "o", "u", "r". +<p> If <em>allowEmptyEntries</em> is TRUE, a null string is inserted in +the list wherever the separator matches twice without intervening +text. +<p> <p>See also <a href="#join">join</a>() and <a href="qstring.html#section">TQString::section</a>(). + +<h3 class=fn><a href="qstringlist.html">TQStringList</a> <a name="split-3"></a>TQStringList::split ( const <a href="qchar.html">TQChar</a> & sep, const <a href="qstring.html">TQString</a> & str, bool allowEmptyEntries = FALSE )<tt> [static]</tt> +</h3> +This is an overloaded member function, provided for convenience. It behaves essentially like the above function. +<p> This version of the function uses a <a href="qchar.html">TQChar</a> as separator, rather +than a <a href="qregexp.html#regular-expression">regular expression</a>. +<p> <p>See also <a href="#join">join</a>() and <a href="qstring.html#section">TQString::section</a>(). + +<!-- eof --> +<hr><p> +This file is part of the <a href="index.html">TQt toolkit</a>. +Copyright © 1995-2007 +<a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center> +<table width=100% cellspacing=0 border=0><tr> +<td>Copyright © 2007 +<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a> +<td align=right><div align=right>TQt 3.3.8</div> +</table></div></address></body> +</html> |