Initializer list C++ in class diagram

Question

I just study class diagram for a few days ago and now I meet a problem where the constructor has its initializer list, is there any way to show the initializer list in class diagram, with example would be good, thank you in advance.

Answer 1

A C++ inializer list is just the type of a parameter of a constructor, like any other.

In the class diagram, you'd therefore show the corresponding constructor (preceded with «create») as an operation with a parameter of this type.

If you want to highlight it, you could add in the diagram the initalizer_list as a separate UML template class and draw a dependency of the class or its constructor to this template. But this is not required, and could quickly lead to undreadable diagrams if many classes use this mechanism.