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template <class T>
struct has_nothrow_assign : public true_type-or-false_type {};

Inherits: If T is a (possibly cv-qualified) type with a non-throwing assignment-operator then inherits from true_type, otherwise inherits from false_type. Type T must be a complete type.

Compiler Compatibility: If the compiler does not support partial-specialization of class templates, then this template can not be used with function types.

Without some (as yet unspecified) help from the compiler, has_nothrow_assign will never report that a class or struct has a non-throwing assignment-operator; this is always safe, if possibly sub-optimal. Currently (May 2005) only Visual C++ 8 has the necessary compiler support to ensure that this trait "just works".

Header: #include <boost/type_traits/has_nothrow_assign.hpp> or #include <boost/type_traits.hpp>