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I am making a blockchain project using solidity which requires storing various objectIDs corresponding to a personId. The person can add and remove objects and we cannot hard-code the number of objects. I am not being able to use the correct data structure for the same. I have looked for 2d arrays and nested mappings but am unable to figure out.

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    What have you tried? Please share some code to better illustrate what you are trying to do. Commented Dec 28, 2020 at 18:38
  • You can use nested mappings.
    – Ismael
    Commented Dec 30, 2020 at 1:36

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I think you can make a struct and then create a mapping with it.

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  • If you have a concrete example that will make your point more clear.
    – Ismael
    Commented Dec 30, 2020 at 0:55

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