remove definitions from headers to prevent build tools from rebuilding includers (saves time).They come from the following two effects described in detail in the sections below: These are the major gains it can provide. So it relies on the explicit instantiation to make sure it links.Įxplicit instantiation allows reducing compile times and output sizes Note: Main can not see the definition of the template from here (just the declaration) I want to support both char and wchar_t with the same code. In this case I only want the template to work with characters but Explicitly instantiate only the classes you want to be defined. Then, at the end of the source file, explicitly instantiate only the version you want to be available. Put the template definition in a source file just like a normal class. Put the template declaration in the header file just like a normal class. If you define a template class that you only want to work for a couple of explicit types.
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