functors.html

指导程序员合理、高效的进行标准模板库编程。

<LI>
 <A href="BinaryPredicate.html">Binary Predicate</A>
</UL>
<UL>
<LI>
 <A href="AdaptableGenerator.html">Adaptable Generator</A>
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 <A href="AdaptableUnaryFunction.html">Adaptable Unary Function</A>
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 <A href="AdaptableBinaryFunction.html">Adaptable Binary Function</A>
<LI>
 <A href="AdaptablePredicate.html">Adaptable Predicate</A>
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 <A href="AdaptableBinaryPredicate.html">Adaptable Binary Predicate</A>
</UL>
<h3>Types</h3>
<UL>
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<tt><A href="plus.html">plus</A></tt>
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<tt><A href="minus.html">minus</A></tt>
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<tt><A href="times.html">multiplies</A></tt> (formerly called <tt>times</tt>)
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<tt><A href="divides.html">divides</A></tt>
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<tt><A href="modulus.html">modulus</A></tt>,
<LI>
<tt><A href="negate.html">negate</A></tt>
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<tt><A href="equal_to.html">equal_to</A></tt>
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<tt><A href="not_equal_to.html">not_equal_to</A></tt>
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<tt><A href="greater.html">greater</A></tt>
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<tt><A href="less.html">less</A></tt>
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<tt><A href="greater_equal.html">greater_equal</A></tt>
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<tt><A href="less_equal.html">less_equal</A></tt>,
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<tt><A href="logical_and.html">logical_and</A></tt>
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<tt><A href="logical_or.html">logical_or</A></tt>
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<tt><A href="logical_not.html">logical_not</A></tt>
<LI>
<tt><A href="subtractive_rng.html">subtractive_rng</A></tt>
</UL>
<UL>
<LI>
<tt><A href="identity.html">identity</A></tt>
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<tt><A href="project1st.html">project1st</A></tt>
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<tt><A href="project2nd.html">project2nd</A></tt>
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<tt><A href="select1st.html">select1st</A></tt>
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<tt><A href="select2nd.html">select2nd</A></tt>
</UL>
<UL>
<LI>
<tt><A href="unary_function.html">unary_function</A></tt>
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<tt><A href="binary_function.html">binary_function</A></tt>
</UL>
<UL>
<LI>
<tt><A href="unary_compose.html">unary_compose</A></tt>
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<tt><A href="binary_compose.html">binary_compose</A></tt>
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<tt><A href="unary_negate.html">unary_negate</A></tt>
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<tt><A href="binary_negate.html">binary_negate</A></tt>
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<tt><A href="binder1st.html">binder1st</A></tt>
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<tt><A href="binder2nd.html">binder2nd</A></tt>
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<tt><A href="pointer_to_unary_function.html">pointer_to_unary_function</A></tt>
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<tt><A href="pointer_to_binary_function.html">pointer_to_binary_function</A></tt>
</UL>
<h3>Functions</h3>
<UL>
<LI>
<tt><A href="unary_compose.html">compose1</A></tt>
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<tt><A href="binary_compose.html">compose2</A></tt>
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<tt><A href="unary_negate.html">not1</A></tt>
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<tt><A href="binary_negate.html">not2</A></tt>
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<tt><A href="binder1st.html">bind1st</A></tt>
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<tt><A href="binder2nd.html">bind2nd</A></tt>
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<tt><A href="ptr_fun.html">ptr_fun</A></tt>
</UL>
<h3>Notes</h3>
<P><A name="1">[1]</A>
The reason for the name &quot;adaptable function object&quot; is that
adaptable function objects may be used by function object adaptors.
<P><A name="2">[2]</A>
The <tt><A href="unary_function.html">unary_function</A></tt> and <tt><A href="binary_function.html" tppabs="http://www.sgi.com/Technology/STL/binary_function.shtml">binary_function</A></tt> bases are
similar to the <tt><A href="input_iterator.html">input_iterator</A></tt>, <tt><A href="output_iterator.html" tppabs="http://www.sgi.com/Technology/STL/output_iterator.shtml">output_iterator</A></tt>,
<tt><A href="forward_iterator.html">forward_iterator</A></tt>, <tt><A href="bidirectional_iterator.html" tppabs="http://www.sgi.com/Technology/STL/bidirectional_iterator.shtml">bidirectional_iterator</A></tt>, and
<tt><A href="random_access_iterator.html">random_access_iterator</A></tt> bases: they are completely empty,
and serve only to provide type information.
<P><A name="3">[3]</A>
This is an example of how to use function objects; it is not
the recommended way of calculating the sum of elements in a vector.
The <tt><A href="accumulate.html">accumulate</A></tt> algorithm is a better way of calculating a sum.
<h3>See also</h3>

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