The name lookup rules apply uniformly to all names (including typedef-names (7.1.3), namespace-names (7.3) and class-names (9.1)) wherever the grammar allows such names in the context discussed by a particular rule. Name lookup associates the use of a name with a declaration (3.1) of that name. Name lookup shall find an unambiguous declaration for the name (see 10.2). Name lookup may associate more than one declaration with a name if it finds the name to be a function name; the declarations are said to form a set of overloaded functions (13.1). Overload resolution (13.3) takes place after name lookup has succeeded. The access rules (clause 11) are considered only once name lookup and function overload resolution (if applicable) have succeeded. Only after name lookup, function overload resolution (if applicable) and access checking have succeeded are the attributes introduced by the name''''s declaration used further in expression processing (clause 5).
A name "looked up in the context of an expression" is looked up as an unqualified name in the scope where the expression is found.
在“表达式的语境中查找”的名字是被出现该表达式的作用域中作为非限定名称查找的。
Because the name of a class is inserted in its class scope (clause 9), the name of a class is also considered a member of that class for the purposes of name hiding and lookup.
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