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Function Overloading Based on Arbitrary Properties of Types

By Jaakko Järvi, Jeremiah Willcock, Howard Hinnant and and Andrew Lumsdaine, June 01, 2003

With these groundbreaking Function Enablers, you have much more control over function overload resolution than you thought.
Table 1: Traits class expression semantics

Table 1: Traits class expression semantics 

<B>is_same<A, B>::value</b>                       <B>true</B> if <B>A</B> and <B>B</B> are the same type.

<B>is_base_and_derived<A, B>::value</B>         <B>true</B> if <B>A</B> is a base class of <B>B</B>, or if <B>A</B> and <B>B</B> are the same class. 
                                                                   
<B>is_convertible<A, B>::value</B>               <B>true</B> if there is an implicit conversion from type <B>A</B> to type <B>B</B>.
                                                                   
<B>is_arithmetic<A>::value</B>                    <B>true</B> if <B>A</B> is an integral or floating-point type.



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