Does Julia (v1.0) define or is there a convention for aliases for Union{T, Nothing} and Union{T, Missing}? For example const Maybe{T} = Union{T,Nothing} const Option{T} = Union{T, Missing} I am aware of wrapper type Some{T}, but that is used for the value nothing as opposed to Union{T,Nothing} wh…

Julia 2.0 reserves the right to go beyond any present (until then, you should be good with those three) :wink:

Aliases for Union{T, Nothing} and Union{T, Missing}?

stevengj September 24, 2018, 2:33am 6

I thought there was a proposal to parse T? as Union{T,Missing}, but I can’t find it.

2 Likes

Short type declarations (syntax sugar)?

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