Note: IBM supports selected features of
C++11, known as C++0x before its ratification. IBM will continue to develop and
implement the features of this standard. The implementation of the
language level is based on IBM's interpretation of the standard. Until
IBM's implementation of all the C++11 features is complete, including
the support of a new C++11 standard library, the implementation may
change from release to release. IBM makes no attempt to maintain compatibility,
in source, binary, or listings and other compiler interfaces, with
earlier releases of IBM's implementation of the new C++11 features.
Use the explicit instantiation declarations feature to suppress
the implicit instantiation of a template specialization or its members.
This helps reduce the collective size of the object files and shorten
compile time.
This technique is described in Using explicit instantiation declarations (C++11).