I’m just curious since Julia uses 1-based indexing. E.g. julia> @enum Color Red Blue julia> Red Red::Color = 0 julia> Blue Blue::Color = 1

Well, the underlying numbers of a @enum are not related to indexing (it cannot be used for it unless you explicitly convert it, or create a new getindex method), so there is no reason why not start at the first unsigned number. You can define the starting value (or all values) of a @enum explicitly…

potentially because Enum might be used with Ccall to map some friend Enums

Why does the first enum member value default to zero instead of one?

Internals & Design

stevengj September 13, 2022, 6:13pm 4

This was already discussed: Why is @enum 0-based?

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Why does the first enum member value default to zero instead of one?

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