How to check whether a uint256 is null in solidity?











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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
    – A.K.
    yesterday















up vote
2
down vote

favorite












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






solidity







share|improve this question


















  • 2




    You can check it by comparing with 0
    – A.K.
    yesterday













up vote
2
down vote

favorite









up vote
2
down vote

favorite











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






solidity







share|improve this question













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






solidity




solidity






share|improve this question













share|improve this question











share|improve this question




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asked yesterday









Rohan Dhar

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  • 2




    You can check it by comparing with 0
    – A.K.
    yesterday














  • 2




    You can check it by comparing with 0
    – A.K.
    yesterday








2




2




You can check it by comparing with 0
– A.K.
yesterday




You can check it by comparing with 0
– A.K.
yesterday










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.
    – Paul Berg
    yesterday











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1 Answer
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active

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1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes








up vote
4
down vote



accepted










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.






share|improve this answer





















  • Indeed, but I'd add that integers do not normally have nulls in any programming language. They are primitives.
    – Paul Berg
    yesterday















up vote
4
down vote



accepted










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.






share|improve this answer





















  • Indeed, but I'd add that integers do not normally have nulls in any programming language. They are primitives.
    – Paul Berg
    yesterday













up vote
4
down vote



accepted







up vote
4
down vote



accepted






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.






share|improve this answer












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.







share|improve this answer












share|improve this answer



share|improve this answer










answered yesterday









Tudor Constantin

1,780212




1,780212












  • Indeed, but I'd add that integers do not normally have nulls in any programming language. They are primitives.
    – Paul Berg
    yesterday


















  • Indeed, but I'd add that integers do not normally have nulls in any programming language. They are primitives.
    – Paul Berg
    yesterday
















Indeed, but I'd add that integers do not normally have nulls in any programming language. They are primitives.
– Paul Berg
yesterday




Indeed, but I'd add that integers do not normally have nulls in any programming language. They are primitives.
– Paul Berg
yesterday


















 

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