I emulated the tic.tac.toe tutorial code and made a simple contract that allows me to add and remove car information. However, I can only push action one at a time and this only allows me to add/remove one entry of car data at a time. How do I stream data from an input file using push action (Could I use ifstream etc.?)? Does this exist in the EOS library?

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This is decentralized application so generally you can't push/pull outside data to/from it. That's also the reason why Oracle service is there to responsible for it.

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