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diff --git a/libstdc++-v3/doc/html/manual/stringstreams.html b/libstdc++-v3/doc/html/manual/stringstreams.html new file mode 100644 index 000000000..1107d61b1 --- /dev/null +++ b/libstdc++-v3/doc/html/manual/stringstreams.html @@ -0,0 +1,37 @@ +<?xml version="1.0" encoding="UTF-8" standalone="no"?> +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> +<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Memory Based Streams</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><link rel="home" href="../spine.html" title="The GNU C++ Library"/><link rel="up" href="io.html" title="Chapter 13. Input and Output"/><link rel="prev" href="streambufs.html" title="Stream Buffers"/><link rel="next" href="fstreams.html" title="File Based Streams"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Memory Based Streams</th></tr><tr><td align="left"><a accesskey="p" href="streambufs.html">Prev</a> </td><th width="60%" align="center">Chapter 13. + Input and Output + +</th><td align="right"> <a accesskey="n" href="fstreams.html">Next</a></td></tr></table><hr/></div><div class="section" title="Memory Based Streams"><div class="titlepage"><div><div><h2 class="title"><a id="std.io.memstreams"/>Memory Based Streams</h2></div></div></div><div class="section" title="Compatibility With strstream"><div class="titlepage"><div><div><h3 class="title"><a id="std.io.memstreams.compat"/>Compatibility With strstream</h3></div></div></div><p> + </p><p>Stringstreams (defined in the header <code class="code"><sstream></code>) + are in this author's opinion one of the coolest things since + sliced time. An example of their use is in the Received Wisdom + section for Sect1 21 (Strings), + <a class="link" href="strings.html#strings.string.Cstring" title="CString (MFC)"> describing how to + format strings</a>. + </p><p>The quick definition is: they are siblings of ifstream and ofstream, + and they do for <code class="code">std::string</code> what their siblings do for + files. All that work you put into writing <code class="code"><<</code> and + <code class="code">>></code> functions for your classes now pays off + <span class="emphasis"><em>again!</em></span> Need to format a string before passing the string + to a function? Send your stuff via <code class="code"><<</code> to an + ostringstream. You've read a string as input and need to parse it? + Initialize an istringstream with that string, and then pull pieces + out of it with <code class="code">>></code>. Have a stringstream and need to + get a copy of the string inside? Just call the <code class="code">str()</code> + member function. + </p><p>This only works if you've written your + <code class="code"><<</code>/<code class="code">>></code> functions correctly, though, + and correctly means that they take istreams and ostreams as + parameters, not i<span class="emphasis"><em>f</em></span>streams and o<span class="emphasis"><em>f</em></span>streams. If they + take the latter, then your I/O operators will work fine with + file streams, but with nothing else -- including stringstreams. + </p><p>If you are a user of the strstream classes, you need to update + your code. You don't have to explicitly append <code class="code">ends</code> to + terminate the C-style character array, you don't have to mess with + "freezing" functions, and you don't have to manage the + memory yourself. The strstreams have been officially deprecated, + which means that 1) future revisions of the C++ Standard won't + support them, and 2) if you use them, people will laugh at you. + </p></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="streambufs.html">Prev</a> </td><td align="center"><a accesskey="u" href="io.html">Up</a></td><td align="right"> <a accesskey="n" href="fstreams.html">Next</a></td></tr><tr><td align="left" valign="top">Stream Buffers </td><td align="center"><a accesskey="h" href="../spine.html">Home</a></td><td align="right" valign="top"> File Based Streams</td></tr></table></div></body></html> |