Default Template Parameters and Template Instantiation
Let’s discuss default template parameters, template instantiation, and a compiler-time feature.
We'll cover the following...
Default template parameters
Sometimes, it is cumbersome to provide template parameter types every time a template is used, especially when that type is almost always a particular type. For example, getResponse() may almost always be called for the int type in the program, and only in a few places for the double type.
It is possible to specify default types for template parameters, which are assumed when the types are not explicitly provided. Default parameter ...