Cookbook: Debug Print a Value with ppx_deriving

[mostafatouny]

Hello,

I am contributing to Debug Print a Value.

Moreover,

• I hope someone shows how to use ppx_deriving with utop -ppx.
• I nominate @yawaramin to add his post, as he commented here.
• I hope someone add printing recipes for maps (association table), Sets, Hash-tables, and Sequences data structures.