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<HTML><!-- -- 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. 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It is provided "as is" without express or implied warranty. -- --><Head><Title>vector<T, Alloc></Title><!-- Generated by htmldoc --></HEAD><BODY BGCOLOR="#ffffff" LINK="#0000ee" TEXT="#000000" VLINK="#551a8b" ALINK="#ff0000"> <IMG SRC="CorpID.gif" ALT="SGI" HEIGHT="43" WIDTH="151"> <!--end header--><BR Clear><H1>vector<T, Alloc></H1><Table CellPadding=0 CellSpacing=0 width=100%><TR><TD Align=left><Img src = "containers.gif" Alt="" WIDTH = "194" HEIGHT = "38" ></TD><TD Align=right><Img src = "type.gif" Alt="" WIDTH = "194" HEIGHT = "39" ></TD></TR><TR><TD Align=left VAlign=top><b>Category</b>: containers</TD><TD Align=right VAlign=top><b>Component type</b>: type</TD></TR></Table><h3>Description</h3>A <tt>vector</tt> is a <A href="Sequence.html">Sequence</A> thatsupports random access to elements, constant time insertion andremoval of elements at the end, and linear time insertion and removalof elements at the beginning or in the middle. The number of elementsin a <tt>vector</tt> may vary dynamically; memory management isautomatic. <tt>Vector</tt> is the simplest of the STL containerclasses, and in many cases the most efficient.<h3>Example</h3><pre>vector<int> V;V.insert(V.begin(), 3);assert(V.size() == 1 && V.capacity() >= 1 && V[0] == 3);</pre><h3>Definition</h3>Defined in the standard header <A href="vector">vector</A>, and in the nonstandardbackward-compatibility header <A href="vector.h">vector.h</A>.<h3>Template parameters</h3><Table border><TR><TH>Parameter</TH><TH>Description</TH><TH>Default</TH></TR><TR><TD VAlign=top><tt>T</tt></TD><TD VAlign=top>The vector's value type: the type of object that is stored in the vector.</TD><TD VAlign=top> </TD></TR><TR><TD VAlign=top><tt>Alloc</tt></TD><TD VAlign=top>The <tt>vector</tt>'s allocator, used for all internal memory management.</TD><TD VAlign=top><tt><A href="Allocators.html">alloc</A></tt></TD></tr></table><h3>Model of</h3><A href="RandomAccessContainer.html">Random Access Container</A>, <A href="BackInsertionSequence.html">Back Insertion Sequence</A>.<h3>Type requirements</h3>None, except for those imposed by the requirements of <A href="RandomAccessContainer.html">Random Access Container</A> and <A href="BackInsertionSequence.html">Back Insertion Sequence</A>.<h3>Public base classes</h3>None. <h3>Members</h3><Table border><TR><TH>Member</TH><TH>Where defined</TH><TH>Description</TH></TR><TR><TD VAlign=top><tt>value_type</tt></TD><TD VAlign=top> <A href="Container.html">Container</A></TD><TD VAlign=top>The type of object, <tt>T</tt>, stored in the vector.</TD></TR><TR><TD VAlign=top><tt>pointer</tt></TD><TD VAlign=top> <A href="Container.html">Container</A></TD><TD VAlign=top>Pointer to <tt>T</tt>.</TD></TR><TR><TD VAlign=top><tt>reference</tt></TD><TD VAlign=top> <A href="Container.html">Container</A></TD><TD VAlign=top>Reference to <tt>T</tt></TD></TR><TR><TD VAlign=top><tt>const_reference</tt></TD><TD VAlign=top> <A href="Container.html">Container</A></TD><TD VAlign=top>Const reference to <tt>T</tt></TD></TR><TR><TD VAlign=top><tt>size_type</tt></TD><TD VAlign=top> <A href="Container.html">Container</A></TD><TD VAlign=top>An unsigned integral type.</TD></TR><TR><TD VAlign=top><tt>difference_type</tt></TD><TD VAlign=top> <A href="Container.html">Container</A></TD><TD VAlign=top>A signed integral type.</TD></TR><TR><TD VAlign=top><tt>iterator</tt></TD><TD VAlign=top> <A href="Container.html">Container</A></TD><TD VAlign=top>Iterator used to iterate through a <tt>vector</tt>.</TD></TR><TR><TD VAlign=top><tt>const_iterator</tt></TD><TD VAlign=top> <A href="Container.html">Container</A></TD><TD VAlign=top>Const iterator used to iterate through a <tt>vector</tt>.</TD></TR><TR><TD VAlign=top><tt>reverse_iterator</tt></TD><TD VAlign=top> <A href="ReversibleContainer.html">Reversible Container</A></TD><TD VAlign=top>Iterator used to iterate backwards through a <tt>vector</tt>.</TD></TR><TR><TD VAlign=top><tt>const_reverse_iterator</tt></TD><TD VAlign=top> <A href="ReversibleContainer.html">Reversible Container</A></TD><TD VAlign=top>Const iterator used to iterate backwards through a <tt>vector</tt>.</TD></TR><TR><TD VAlign=top><tt>iterator begin()</tt></TD><TD VAlign=top> <A href="Container.html">Container</A></TD><TD VAlign=top>Returns an <tt>iterator</tt> pointing to the beginning of the <tt>vector</tt>.</TD></TR><TR><TD VAlign=top><tt>iterator end()</tt></TD><TD VAlign=top> <A href="Container.html">Container</A></TD><TD VAlign=top>Returns an <tt>iterator</tt> pointing to the end of the <tt>vector</tt>.</TD></TR><TR><TD VAlign=top><tt>const_iterator begin() const</tt></TD><TD VAlign=top> <A href="Container.html">Container</A></TD><TD VAlign=top>Returns a <tt>const_iterator</tt> pointing to the beginning of the <tt>vector</tt>.</TD></TR><TR><TD VAlign=top><tt>const_iterator end() const</tt></TD><TD VAlign=top> <A href="Container.html">Container</A></TD><TD VAlign=top>Returns a <tt>const_iterator</tt> pointing to the end of the <tt>vector</tt>.</TD></TR><TR><TD VAlign=top><tt>reverse_iterator rbegin()</tt></TD><TD VAlign=top> <A href="ReversibleContainer.html">Reversible Container</A></TD><TD VAlign=top>Returns a <tt>reverse_iterator</tt> pointing to the beginning of the reversed vector.</TD></TR><TR><TD VAlign=top><tt>reverse_iterator rend()</tt></TD><TD VAlign=top> <A href="ReversibleContainer.html">Reversible Container</A></TD><TD VAlign=top>Returns a <tt>reverse_iterator</tt> pointing to the end of the reversed vector.</TD></TR><TR><TD VAlign=top><tt>const_reverse_iterator rbegin() const</tt></TD><TD VAlign=top> <A href="ReversibleContainer.html">Reversible Container</A></TD><TD VAlign=top>Returns a <tt>const_reverse_iterator</tt> pointing to the beginning of the reversed vector.</TD></TR><TR><TD VAlign=top><tt>const_reverse_iterator rend() const</tt></TD><TD VAlign=top> <A href="ReversibleContainer.html">Reversible Container</A></TD><TD VAlign=top>Returns a <tt>const_reverse_iterator</tt> pointing to the end of the reversed vector.</TD></TR><TR><TD VAlign=top><tt>size_type size() const</tt></TD><TD VAlign=top> <A href="Container.html">Container</A></TD><TD VAlign=top>Returns the size of the <tt>vector</tt>.</TD></TR><TR><TD VAlign=top><tt>size_type max_size() const</tt></TD><TD VAlign=top> <A href="Container.html">Container</A></TD><TD VAlign=top>Returns the largest possible size of the <tt>vector</tt>.</TD></TR><TR><TD VAlign=top><tt>size_type capacity() const</tt></TD><TD VAlign=top><tt>vector</tt></TD><TD VAlign=top>See below.</TD></TR><TR><TD VAlign=top><tt>bool empty() const</tt></TD><TD VAlign=top> <A href="Container.html">Container</A></TD><TD VAlign=top><tt>true</tt> if the <tt>vector</tt>'s size is <tt>0</tt>.</TD></TR><TR><TD VAlign=top><tt>reference operator[](size_type n)</tt></TD><TD VAlign=top> <A href="RandomAccessContainer.html">Random Access Container</A></TD><TD VAlign=top>Returns the <tt>n</tt>'th element.</TD></TR><TR><TD VAlign=top><tt>const_reference operator[](size_type n) const</tt></TD><TD VAlign=top> <A href="RandomAccessContainer.html">Random Access Container</A></TD><TD VAlign=top>?? 快捷鍵說明
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