Performance

Automatic instantiation adds compilation/link time. There are two ways of avoiding this overhead, at the cost of more explicit user intervention:

• Use one of the manual instantiation schemes described earlier. Typically you would identify which template classes were used by a program and then create a specific source file to contain the instantiations.

• Identify instantiations that are needed for a project and do them up front, then put the resulting objects into an archive library for use by the project. Remember that the automatic instantiation process is driven by unresolved external symbols, and provision of the needed instantiations preempts any need for automatic instantiation.