Support nanosecond timestamps (from/to)

[rbeeli]

If I read the docs correctly, there is no support for constructing a NanoDate from a UNIX timestamp in nanoseconds, and also no function to convert a NanoDate to an Int64 representing nanoseconds since epoch.

Is this correct? If so, could support for this be added?

[rbeeli]

Ok, I was to fast with my conclusion, it just wasn't clear from the docs, maybe this could be added? It shows something under "Technical: unexported", but Dates.value is exported/accessible.

julia> NanoDate(2024,7, 7)
2024-07-07T00:00:00

julia> Dates.value(NanoDate(2024,7, 7))
63855993600000000000

julia> NanoDate(63855993600000000000)
2024-07-07T00:00:00

Also, there is nanodate2unixnanos, but not listed in the docs.

[rbeeli]

Actually, these methods do not represent the nanoseconds timestamp since epoch, is this correct?

The nanosecond UNIX timestamp for 2024-07-07 should be 1720310400000000000, not 63855993600000000000.

[JeffreySarnoff]

the methods you want already exist, although we use Integers as Float64s are not resolute enough

julia> using Dates, NanoDates
julia> using NanoDates: nanodate2unixnanos, unixnanos2nanodate


julia> nd1 = NanoDate("2024-07-07")
2024-07-07T00:00:00

julia> nd2 = NanoDate("2024-07-07T00:00:00.000000001")
2024-07-07T00:00:00.000000001

julia> und1 = nanodate2unixnanos(nd1)
1720310400000000000

julia> und2 = nanodate2unixnanos(nd2)
1720310400000000001

julia> unixnanos2nanodate(und1)
2024-07-07T00:00:00

julia> unixnanos2nanodate(und2)
2024-07-07T00:00:00.000000001

see src/conversions.jl for other, similar conversions

[rbeeli]

Thanks @JeffreySarnoff. How about adding it to the docs, i.e. nanodate2unixnanos and unixnanos2nanodate?

[JeffreySarnoff]

already in the docs/ here <https://github.com/JuliaTime/NanoDates.jl/blob/main/docs/src/use/timestamps.md> for some reason it did regenerate the docs with the improvements -- thanks for the note

…

On Tue, Aug 13, 2024 at 11:23 AM Rino B. ***@***.***> wrote: Thanks @JeffreySarnoff <https://github.com/JeffreySarnoff>. How about adding it to the docs, i.e. nanodate2unixnanos and unixnanos2nanodate? — Reply to this email directly, view it on GitHub <#44 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAM2VRVROADHJ7CAR72SD33ZRIQFZAVCNFSM6AAAAABKPV2UPWVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDEOBWGUZDCNZTGY> . You are receiving this because you were mentioned.Message ID: ***@***.***>

[JeffreySarnoff]

ok that worked the docs are regenerated On Tue, Aug 13, 2024 at 11:27 AM Jeffrey Sarnoff ***@***.***> wrote:

…

already in the docs/ here <https://github.com/JuliaTime/NanoDates.jl/blob/main/docs/src/use/timestamps.md> for some reason it did regenerate the docs with the improvements -- thanks for the note On Tue, Aug 13, 2024 at 11:23 AM Rino B. ***@***.***> wrote: > Thanks @JeffreySarnoff <https://github.com/JeffreySarnoff>. How about > adding it to the docs, i.e. nanodate2unixnanos and unixnanos2nanodate? > > — > Reply to this email directly, view it on GitHub > <#44 (comment)>, > or unsubscribe > <https://github.com/notifications/unsubscribe-auth/AAM2VRVROADHJ7CAR72SD33ZRIQFZAVCNFSM6AAAAABKPV2UPWVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDEOBWGUZDCNZTGY> > . > You are receiving this because you were mentioned.Message ID: > ***@***.***> >