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I want to check whether a uint256 variable is null. How can I do so in solidity?

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    You can check it by comparing with 0
    – Aniket
    Nov 21, 2018 at 8:09

1 Answer 1

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There aren't any things like null in solidity.

All the uninitialized variables are set to a zero like value.

Have a look at this answer for more examples.

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    Indeed, but I'd add that integers do not normally have nulls in any programming language. They are primitives. Nov 21, 2018 at 23:10

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