mingw/html/lib/SelectSaver.html

   1 <?xml version="1.0" ?>
   2 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
   3 <html xmlns="http://www.w3.org/1999/xhtml">
   4 <head>
   5 <title>SelectSaver - save and restore selected file handle</title>
   6 <meta http-equiv="content-type" content="text/html; charset=utf-8" />
   7 <link rev="made" href="mailto:" />
   8 </head>
   9
  10 <body style="background-color: white">
  11 <table border="0" width="100%" cellspacing="0" cellpadding="3">
  12 <tr><td class="block" style="background-color: #cccccc" valign="middle">
  13 <big><strong><span class="block">&nbsp;SelectSaver - save and restore selected file handle</span></strong></big>
  14 </td></tr>
  15 </table>
  16
  17 <p><a name="__index__"></a></p>
  18 <!-- INDEX BEGIN -->
  19
  20 <ul>
  21
  22         <li><a href="#name">NAME</a></li>
  23         <li><a href="#synopsis">SYNOPSIS</a></li>
  24         <li><a href="#description">DESCRIPTION</a></li>
  25 </ul>
  26 <!-- INDEX END -->
  27
  28 <hr />
  29 <p>
  30 </p>
  31 <h1><a name="name">NAME</a></h1>
  32 <p>SelectSaver - save and restore selected file handle</p>
  33 <p>
  34 </p>
  35 <hr />
  36 <h1><a name="synopsis">SYNOPSIS</a></h1>
  37 <pre>
  38     use SelectSaver;</pre>
  39 <pre>
  40     {
  41        my $saver = new SelectSaver(FILEHANDLE);
  42        # FILEHANDLE is selected
  43     }
  44     # previous handle is selected</pre>
  45 <pre>
  46     {
  47        my $saver = new SelectSaver;
  48        # new handle may be selected, or not
  49     }
  50     # previous handle is selected</pre>
  51 <p>
  52 </p>
  53 <hr />
  54 <h1><a name="description">DESCRIPTION</a></h1>
  55 <p>A <code>SelectSaver</code> object contains a reference to the file handle that
  56 was selected when it was created.  If its <code>new</code> method gets an extra
  57 parameter, then that parameter is selected; otherwise, the selected
  58 file handle remains unchanged.</p>
  59 <p>When a <code>SelectSaver</code> is destroyed, it re-selects the file handle
  60 that was selected when it was created.</p>
  61 <table border="0" width="100%" cellspacing="0" cellpadding="3">
  62 <tr><td class="block" style="background-color: #cccccc" valign="middle">
  63 <big><strong><span class="block">&nbsp;SelectSaver - save and restore selected file handle</span></strong></big>
  64 </td></tr>
  65 </table>
  66
  67 </body>
  68
  69 </html>