Usage modern C++ features on JSON modules

[cngzhnp]

Starting from this module, I want to use modern C++ features such as:

• Use nullptr instead of 0.
• Use auto instead of iterator type itself.
• Use default keyword instead of copy constructor, destructor implementation
• Use override keyword if necessary.
• Use using keyword instead of typedef.
• Use proper functions like empty() call instead of object.size() == 0

[teksturi]

This is little bit old PR already but I still answer this. It does not make much sense to change style for just small portion of code base. It would be much better to do just one change at time. Example this

• Use proper functions like empty() call instead of object.size() == 0

could be done to whole repo. It would be much more easy to accept those kind of changes.

[matejk]

#4354

[cngzhnp]

This is little bit old PR already but I still answer this. It does not make much sense to change style for just small portion of code base. It would be much better to do just one change at time. Example this

• Use proper functions like empty() call instead of object.size() == 0

could be done to whole repo. It would be much more easy to accept those kind of changes.

Hello @teksturi, sorry for late answer.

However, my intention was not just a change into small portion of codebase like this, also I am not fan of inconsistent things. I just want to split up code review based on submodules. Creating a PR with 100 files changed which was not easy to review and apply changes. So, doing it step by step would be much better idea at least for me at that time.

[andrewauclair]

@matejk did you mean to delete devel? Doesn't seem right. Nevermind. I just saw the discussion post. Had way too many notifications to go through.

[matejk]

@cngzhnp, would you be willing to rebase this PR to main?