Hello
I want to create custom product attribute type - editable array. First column should be date, second should be select.
Something like that in M1 : 
I found similar solution for core config fields here:
https://magento.stackexchange.com/questions/94658/magento-2-how-to-create-table-setting-in-admin-sys...
But I cant use this in product attributes.
Maybe someone know a way to implement it in product attribute ?