chartrts.htm

这是关于VC++中的STL容器的资料,包括了STL容器各个类之间关系以及类的说明

<pre>
<a name="eq1">
Method             eq()</a>

Access             Public

Classification     Accessor

Syntax             static bool eq(const char_type& c1,const char_type& c2);

Parameters         <em>c1</em> is a reference to a <a href="chartrts.htm#char-type">char_type</a>
                   object which is compared to the <a href="chartrts.htm#char-type">char_type</a> of c2.

                   <em>c2</em> is a reference to a <a href="chartrts.htm#char-type">char_type</a>
                   object which is compared to the <a href="chartrts.htm#char-type">char_type</a> of c1.

Returns            This method returns true if c1 == c2.

</pre>

<h3>Description</h3>
<p>
The eq_int_type() method determines if <em>c1</em> == <em>c2</em>.
The <a href="chartrts.htm#char-type">char_type</a>s are compared for
equivalence.
</p>


<hr>
<a name="find">
Method             find()</a>

Access             Public

Classification     Accessor

Syntax             static const char_type* find(const char_type* s, 
                                                int n, const char_type& a);

Parameters         <em>s</em> points to a sequence of characters to be searched.

                   <em>n</em> is the number of characters in the array to be
                   searched.

                   <em>a</em> is the character to locate.

Returns            This method returns a null pointer if not successful.

</pre>

<h3>Description</h3>
<p>
The find() method finds the smallest <a href="chartrts.htm#char-type">char_type</a>
in the array <em>s</em> from <em>s</em> to <em>s</em> + <em>n</em> where
<a href="chartrts.htm#char-type">char_type</a> is equal to <em>a</em>
<a href="chartrts.htm#char-type">char_type</a>.
</p>


<hr>
<pre>
<a name="get-state">
Method             get_state()</a>

Access             Public

Classification     Accessor

Syntax             static state_type get_state(pos_type pos);

Parameters         <em>pos</em> is a type <a href="chartrts.htm#pos-type">pos_type</a>.

Returns            This method returns the <a href="chartrts.htm#state-type">state_type</a> of pos.

</pre>

<h3>Description</h3>
<p>
The get_state() method returns the <a href="chartrts.htm#state-type">state_type</a> 
of <em>pos</em>.
</p>


<hr>
<pre>
<a name="eof">
Method             eof()</a>

Access             Public

Classification     Accessor

Syntax             static int_type eof();

Parameters         None

Returns            This method returns an int_type that is the 
                   end-of-file.

</pre>

<h3>Description</h3>
<p>
The eof() method returns an int_type that is the end-of-file.
</p>


<hr>

<pre>
<a name="not-eof">
Method             not_eof()</a>

Access             Public

Classification     Accessor

Syntax             static int_type not_eof(const int_type& c);

Parameters         c is the

Returns            This method returns an int_type c that is not the
                   end-of-file.

</pre>

<h3>Description</h3>
<p>
The not_eof() method returns an <a href="chartrts.htm#int-type">int_type</a> 
<em>c</em> such that <em>c</em> is not the end-of-file.
</p>

<hr>

<pre>
<a name="length">
Method             length()</a>

Access             Public

Classification     Accessor

Syntax             static size_t length(const char_type* s);

Parameters         <em>s</em> points to a sequence of characters.

Returns            This method returns the length of the sequence s.

</pre>

<h3>Description</h3>
<p>
The length() method returns the number of elements in character sequence.
</p>

<hr>


<pre>
<a name="lt">
Method             lt()</a>

Access             Public

Classification     Accessor

Syntax             static bool lt(const char_type& c1, const char_type& c2);

Parameters         <em>c1</em> is a reference to a char_type which is compared
                   to c2.

                   <em>c2</em> is a reference to a char_type which is compared
                   to c1.

Returns            This method returns true if c1 < c2.

</pre>

<h3>Description</h3>
<p>
The lt() method determines if <em>c1</em> &lt; <em>c2</em>.
</p>


<hr>


<pre>
<a name="move">
Method             move()</a>

Access             Public

Classification     Accessor

Syntax             static char_type* move(char_type* s1, const char_type* s2,
                                          size_t n);

Parameters         <em>s1</em> points to a sequence of characters in which
                   characters from array s2 is copied.

                   <em>s2</em> points to a sequence of characters which
                   are copied to array s1.

                   <em>n</em> is the number of characters.
 
Returns            This method returns s1.

</pre>

<h3>Description</h3>
<p>
The move() method moves <em>n</em> characters from <em>s2</em> to <em>s1</em>
using the assign(s[i],s2[i]). This method will work correctly even if 
<em>s2</em> is in the range of <em>s1</em> + <em>n</em>.

</p>

<hr>

<pre>
<a name="to-char-type">
Method             to_char_type()</a>

Access             Public

Classification     Accessor

Syntax             static char_type to_char_type(const int_type& c);

Parameters         <em>c</em> is a reference to an <a href="chartrts.htm#int-type">int_type</a> that is
                   to be mapped to a <a href="chartrts.htm#char-type">char_type</a>.

Returns            This method returns the corresponding char_type.

</pre>

<h3>Description</h3>
<p>
The to_char_type() method maps an int_type <em>c</em> to a char_type. The corresponding
char_type is returned.
</p>


<hr>
static int_type to_int_type(const char_type& c);
<pre>
<a name="to-int-type">
Method             to_int_type()</a>

Access             Public

Classification     Accessor

Syntax             static int_type to_int_type(const char_type& c);

Parameters         <em>c</em> is a reference to a <a href="chartrts.htm#char-type">char_type</a> that is
                   to be mapped to an <a href="chartrts.htm#int-type">int_type</a>.

Returns            This method returns the corresponding int_type.

</pre>

<h3>Description</h3>
<p>
The to_int_type() method maps an char_type <em>c</em> to an int_type. The corresponding
int_type is returned.
</p>

<hr>

<a name="crd"><h2>The Class Relationship Diagram for char_traits</h2></a>
<img src="chartrat.gif">
<hr>

</body>

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