Nullable values

Timestamps supports Nullable{T} values and shows them in REPL as NA:

julia> na = Timestamp(Date(2000,1,3), Nullable{Int}())
2000-01-03 | NA

julia> vcat(clstamp, na)
502-element Array{Timestamps.Timestamp{T},1}:
2000-01-03 | 111.94
2000-01-04 | 102.5
2000-01-05 | 104.0
2000-01-06 | 95.0
2000-01-07 | 99.5
2000-01-10 | 97.75
2000-01-11 | 92.75
⋮
2001-12-24 | 21.36
2001-12-26 | 21.49
2001-12-27 | 22.07
2001-12-28 | 22.43
2001-12-31 | 21.9
2000-01-03 | NA

To inspect the value of the NA further, simply query the object with the . operator:

julia> na.value
Nullable{Int64}()