Hi again,

In R, there are various numerics like, NA, Inf, or simple integers etc.
However I want to include one custom type: "TBD", which R should treat as
numeric, not character.

That "TBD" should have same property like Inf, however except this: TBD -
TBD = 0

In future, I am planning to add few more properties to TBD.

Can somebody guide me if this is possible in R, ans also some pointer on
how can be done in R

Thanks and regards,

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