function ToArrow()

in src/ArrowTypes/src/ArrowTypes.jl [404:423]

• 19 lines of code
• 8 McCabe index (conditional complexity)

function ToArrow(x::A) where {A}
    S = eltype(A)
    T = ArrowType(S)
    if S === T && concrete_or_concreteunion(S)
        return x
    elseif !concrete_or_concreteunion(T)
        
        if isempty(x)
            return Missing[]
        end
        T = typeof(toarrow(x[1]))
        for i = 2:length(x)
            @inbounds T = promoteunion(T, typeof(toarrow(x[i])))
        end
        if T === Missing && concrete_or_concreteunion(S)
            T = promoteunion(T, typeof(toarrow(default(S))))
        end
    end
    return ToArrow{T,A}(x)
end