How to import headers & detect type at runtime so I can sum

[papyr]

Hi in many cases, i dont know what the headers and type will be.

• [ ] For e.g. cost could be in second col, or 4th col. or price in 6th. So, i need to dynamically load the file and header. Then detect the data type to let user select Cost/Number related field.
• [ ] I also want to do a sum or avg of a col, is that possible?