C++ : Partial class template argument deduction in C++17

C++ : Partial class template argument deduction in C++17
To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

I promised to reveal a secret feature to you, and now it's time to share it.
This is a YouTube's feature which works on Desktop.
First, Ensure that the video is playing before proceeding.
After that, type the word 'awesome' on your keyboard.
Your YouTube progress indicator will turn into a shimmering rainbow.

Let me give you a quick introduction about myself,
Hello there, my name is Delphi.
I help you answer your questions.
C++ : Partial class template argument deduction in C++17
If you have specific questions, please feel free to comment or chat with me to discuss them.
Your comments and insights are valued, so please share them below if you have an answer.
Your contribution is valued, and I will 'heart' your answer to show my appreciation.
C++ template Partial C++17 : argument in deduction class