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<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN"><!-- -- Copyright (c) 1996-1999 -- Silicon Graphics Computer Systems, Inc. -- -- Permission to use, copy, modify, distribute and sell this software -- and its documentation for any purpose is hereby granted without fee, -- provided that the above copyright notice appears in all copies and -- that both that copyright notice and this permission notice appear -- in supporting documentation. Silicon Graphics makes no -- representations about the suitability of this software for any -- purpose. It is provided "as is" without express or implied warranty. -- -- Copyright (c) 1994 -- Hewlett-Packard Company -- -- Permission to use, copy, modify, distribute and sell this software -- and its documentation for any purpose is hereby granted without fee, -- provided that the above copyright notice appears in all copies and -- that both that copyright notice and this permission notice appear -- in supporting documentation. Hewlett-Packard Company makes no -- representations about the suitability of this software for any -- purpose. It is provided "as is" without express or implied warranty. -- --><HTML> <HEAD> <title>STL: What's New</title> </HEAD><BODY TEXT="#000000" LINK="#006600" ALINK="#003300" VLINK="#7C7F87" BGCOLOR="#FFFFFF"><A HREF="/"><IMG SRC="/images/common/sgilogo_small.gif" ALT="SGI Logo" WIDTH="80" HEIGHT="72" BORDER="0"></A><P><!--end header--><h1>What's New</h1><H2>Release 3.3: June 8, 2000</H2><UL><LI> New feature: concept checks. The library now does better compile-time error checking to make sure that the types used to instantiate library templates conform to the templates' requirements.<LI> Removed two non-standard-conforming extensions: the second, defaulted template parameter in bitset, and the third, default template parameter in deque.<LI> Many bug fixes, performance enhancements, and compatibility improvements.</UL><H2>Release 3.2: April 22, 1999</H2><UL><LI> New feature: <A Href="valarray"><valarray></A> header, as defined in section 26.3 of the C++ standard.<LI> <A Href="limits"><limits></A> header is now supported on compilers that lack support for constant initialization of static const data members, such as Microsoft v6.0.<LI> Performance improvements in <tt><A href="copy.html">copy</A></tt> for compilers that lack support for partial specialization of templates.<LI> Improved support for <tt><A href="insert_iterator.html">insert_iterator</A></tt> when used with hash tables and <tt><A href="Slist.html">slist</A></tt>.<LI> Documentation bug fix: documentation now makes it clear which library features are standard and which are SGI extensions.<LI> Bug fixes.</UL><H2>Release 3.13: March 11, 1999</H2><P><UL><LI>Added a <A Href="FAQ.html">Frequently Asked Questions</A> list.<LI>Bug fixes, particularly in multithreading support for non-SGI compilers.<LI>The <tt>at</tt> member function is now supported for the <tt><A href="Vector.html">vector</A></tt> and <tt><A href="Deque.html">deque</A></tt> classes. (It was previously supported only for <tt><A href="basic_string.html">string</A></tt>.)</UL><H2>Release 3.12: February 2, 1999</H2><P><UL><LI> Minor bug fixes.<LI> The <A Href="string"><string></A> and <A Href="bitset"><bitset></A> headers are now supported on compilers that lack full support for member templates and partial specialization, such as Microsoft v6.0.<LI> Code to support multithreading has been consolidated in a single file, so that system dependences are better isolated.</UL><H2>Release 3.11: July 21, 1998</H2><UL><LI> Minor bug fixes.<LI> Faster <tt>operator[]</tt> in <tt><A href="Map.html">map</A></tt>.<LI> Algorithmic improvements in <tt><A href="find.html">find</A></tt>, <tt><A href="find_if.html">find_if</A></tt>, and <tt><A href="partition.html">partition</A></tt>.<LI> The <A Href="stdexcept">standard exception hierarchy</A> is now usable on compilers that do not provide an <tt><exception></tt> header.</UL><H2>Release 3.1: June 9, 1998</H2>This release provides several new features.<UL><LI> Standard-conforming <tt><A href="basic_string.html">string</A></tt> and <tt><A href="bitset.html">bitset</A></tt> classes, and the <A Href="stdexcept">standard exception hierarchy</A>.<LI> Standard-conforming allocators, including the default allocator class <tt>allocator<T></tt>. All containers now use standard allocators, and all containers now support allocators whose instances are distinct. Old-style allocators, like <tt>alloc</tt>, are still supported for backward compatibility.<LI> Algorithmic improvements in <tt><A href="search.html">search</A></tt>.<LI> All sequences now support the <tt>resize</tt> and <tt>assign</tt> member functions. All sequences now properly support overloaded <tt>insert</tt> member functions and constructors in the presence of member templates.<LI> Bug fixes in <tt><A href="Rope.html">rope</A></tt>, and minor bug fixes elsewhere. Minor changes for standard conformance.<LI> Standard-conforming <tt>auto_ptr</tt> class.<LI> Internal names, such as names of function and template parameters, have been changed so that they cannot conflict with user names (including user macros).</UL><H2>Release 3.01: October 31, 1997</H2> This is a minor release. It consists only of bug fixes (the mostimportant ones are in <tt><A href="Rope.html">rope</A></tt>), small changes to reflectchanges in the Final Draft International Standard (FDIS), andperformance improvements in single-element insertion into containers.<H2>Release 3.0: October 31, 1997</H2><UL> <LI> Major reorganization of header files. Headers now have the names described in the draft C++ standard. (Old header names are provided as well for backward compatibility.) The new-style headers declare their contents in namespace <tt>std</tt>; the old-style headers do too, but they import those declarations into the global namespace with using declarations. So, for example, <tt>#include <vector.h></tt> is roughly equivalent to <tt>#include <vector></tt> followed by the declaration <tt>using std::vector;</tt>.<P> Note that namespace <tt>std</tt> is only enabled for compilers whose support for namespaces is sufficient; this is controlled by the header <tt><stl_config.h></tt>. <LI> Bug fixes, and minor changes for standard conformance.</UL><H2>Release 2.03: September 9, 1997</H2><UL><LI> Bug fixes, most importantly in <tt><A href="Rope.html">rope</A></tt>.<LI> New version of <tt>reverse_iterator</tt> that takes only a single template parameter, as described in the draft standard. (This relies on <tt><A href="iterator_traits.html">iterator_traits</A></tt>, so you can only use the new version of <tt>reverse_iterator</tt> if your compiler supports partial specialization.)<LI> New algorithms: <tt><A href="find_first_of.html">find_first_of</A></tt>, <tt><A href="search_n.html">search_n</A></tt>, <tt><A href="find_end.html">find_end</A></tt><LI> Changed the <A href="iterator_tags.html">iterator tag</A> classes so that they form an inheritance hierarchy.<LI> Added the <tt>-></tt> operator to all predefined iterators (except for output iterators).</UL><H2>Release 2.02: July 31, 1997</H2><UL><LI>Bug fixes, most importantly in <tt><A Href="Rope.html">rope</A></tt> and <tt><A Href="Deque.html">deque</A></tt>.<LI>New feature: function object adaptors for member functions. This is a family of classes: <tt><A Href="mem_fun_t.html">mem_fun_t</A></tt>, <tt><A Href="mem_fun_ref_t.html">mem_fun_ref_t</A></tt>, <tt><A Href="mem_fun1_t.html">mem_fun1_t</A></tt>, <tt><A Href="mem_fun1_ref_t.html">mem_fun1_ref_t</A></tt>.</UL><H2>Release 2.01: June 30, 1997</H2>Bug fixes only, no new features.<H2>Release 2.0: June 13, 1997</H2>This is a major release, with many new features. Here are some of themost important.<UL><LI>Exception safety. All STL components are now exception safe.<LI>New container class: <tt><A Href="Rope.html">rope</A></tt>. A scalable string representation.<LI>New container class: <tt><A Href="Slist.html">slist</A></tt>. Singly linked lists.<LI>Member templates. If your compiler supports member templates, then you will be able to use the fully general form of containers' copy constructors and <tt>insert</tt> member functions.<LI>New mechanism for accessing <A href="Iterators.html">iterators</A>' associated type information: <tt><A Href="iterator_traits.html">iterator_traits</A></tt>. (Note: you can only use <tt><A Href="iterator_traits.html">iterator_traits</A></tt> if your compiler supports "partial specialization".) The algorithms <tt><A href="count.html">count</A></tt>, <tt><A href="count_if.html">count_if</A></tt>, and <tt><A href="distance.html">distance</A></tt> have been rewritten in terms of <tt><A Href="iterator_traits.html">iterator_traits</A></tt>.<LI>Reimplementation of <tt><A Href="Deque.html">deque</A></tt>. <tt><A Href="Deque.html">deque</A></tt> has been completely rewritten, for higher performance.<LI><tt>type_traits</tt> mechanism, which allows omission of null constructor and destructor calls.<LI>New <tt><A href="temporary_buffer.html">temporary_buffer</A></tt> class. This was partially motivated by exception safety, but it is also more convenient and more efficient than the old <tt><A href="get_temporary_buffer.html">get_temporary_buffer</A></tt> and <tt><A href="return_temporary_buffer.html">return_temporary_buffer</A></tt> functions.<LI>New allocator, <tt>debug_alloc</tt>, which is useful for verifying the correctness of memory allocation and deallocation.<LI>New algorithms: <tt><A href="copy_n.html">copy_n</A></tt>, <tt><A href="lexicographical_compare_3way.html">lexicographical_compare_3way</A></tt>, <tt><A href="power.html">power</A></tt>, <tt><A href="uninitialized_copy_n.html">uninitialized_copy_n</A></tt>.<LI>Greater portability. The SGI STL can now be compiled using Microsoft Visual C++ 5.0, and Borland C++ 5.02; it should not be difficult to port it to any other compiler that has good support for templates. (Specifically, any compiler that has default template parameters.) Most compiler-specific code is isolated in the file <tt>stl_config.h</tt>.</UL><!-- start footer --><!-- Footer Begins --><STYLE TYPE="text/css"><!--TD.footer, TD.footer A{ font-family: Arial, helvetica, sans-serif; font-size: 8pt;}A.home {font-family: Arial, helvetica, sans-serif;}--></STYLE><P><A CLASS="home" HREF="index.html">STL Home</A><P><TABLE WIDTH="600" CELLPADDING="0" CELLPADDING="0" BORDER="0"> <TR> <TD ALIGN="RIGHT" CLASS="footer"><A HREF="/company_info/terms.html" TARGET="_top">terms of use</A> | <A HREF="/company_info/privacy.html" TARGET="_top">privacy policy</A></TD> <TD ALIGN="CENTER" CLASS="footer"> | </TD> <TD ALIGN="LEFT" CLASS="footer"><A HREF="/cgi-bin/feedback/" TARGET="_top">contact us</A></TD> </TR><TR> <TD ALIGN="RIGHT" CLASS="footer">Copyright © 1993-2003 Silicon Graphics, Inc. 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