August 2012
Intermediate to advanced
976 pages
30h 17m
English
Content preview from C++ Primer, Fifth Edition
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18.2.4. Overloading and Namespaces
Namespaces have two impacts on function matching (§ 6.4, p. 233). One of these should be obvious: A using declaration or directive can add functions to the candidate set. The other is much more subtle.
Argument-Dependent Lookup and Overloading
As we saw in the previous section, name lookup for functions that have class-type arguments includes the namespace in which each argument’s class is defined. This rule also impacts how we determine the candidate set. Each namespace that defines a class used as an argument (and those that define its base classes) is searched for candidate functions. Any functions in those ...
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