function writearray()

in src/utils.jl [34:57]

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

function writearray(io::IO, ::Type{T}, col) where {T}
    if col isa Vector{T}
        n = Base.write(io, col)
    elseif isbitstype(T) && (
        col isa Vector{Union{T,Missing}} || col isa SentinelVector{T,T,Missing,Vector{T}}
    )
        
        n = Base.unsafe_write(io, pointer(col), sizeof(T) * length(col))
    elseif col isa ChainedVector
        n = 0
        for A in col.arrays
            n += writearray(io, T, A)
        end
    else
        n = 0
        data = Vector{UInt8}(undef, sizeof(col))
        buf = IOBuffer(data; write=true)
        for x in col
            n += Base.write(buf, coalesce(x, ArrowTypes.default(T)))
        end
        n = Base.write(io, take!(buf))
    end
    return n
end