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datetimejulia
Barry Andersen
Barry Andersen

Reputation: 609

How to use datetime in Julia?

I am using Julia 0.3.0 on Windows 8.1

These examples came from the Datetime manual at https://github.com/quinnj/Datetime.jl/wiki/Datetime-Manual

I tried this:

julia> using datetime
Warning: requiring "datetime" did not define a corresponding module.

julia> date(2013,7,1)
ERROR: date not defined

julia> today()
ERROR: today not defined

julia> dt = date(2013,7,1)
ERROR: date not defined

julia> dt = datetime(2012,6,30,18,59,50,0,CST)
ERROR: datetime not defined

julia> datetime(2013,7,1,12,0,0,0,UTC)
ERROR: datetime not defined

How do I create a datetime object? I understand that DateTime will be deprecated and that Dates will be the new datetime module. I added that package but I can't find any intructions on how to use it.

Upvotes: 4

Views: 2938

Answers (4)

Carlos Saltos
Carlos Saltos

Reputation: 1511

An update using Julia 1.5.1 to solve it:

  • Open the julia interpreter with the command:
/Applications/Julia-1.5.app/Contents/Resources/julia/bin/julia

NOTE: replace the full path with the path you have julia installed at (or even better add it to the global PATH variable)

  • Inside the julia interpreter run this commands:
julia> import Pkg
julia> Pkg.add("Dates")

And that's it !!

Now you should be able to run julia programs with a code like:

using Dates

println(DateTime(2020))

More info about the Dates julia API can be found at https://docs.julialang.org/en/v1/stdlib/Dates/

Upvotes: 1

Nico202
Nico202

Reputation: 285

An update just in case somebody still read this (first result on duckduckgo): julia Datetime is deprecated since from julia 0.4-dev there's the package Dates that got merged.

So, the right way nowadays (julia 0.5, 0.6) is to use Base.Dates like in

Base.Dates.today()

or in

import Base.Dates; now()

Upvotes: 1

Barry Andersen
Barry Andersen

Reputation: 609

I found the solution. Uninstall/Reinstall Julia to get rid of Datetime package. run Pkg.add("Dates"), user manual here docs.julialang.org/en/latest/manual/dates

Upvotes: 0

IainDunning
IainDunning

Reputation: 11664

The first line should be using Datetime, after installing the Datetime package with Pkg.add("Datetime").

julia> using Datetime

julia> date(2013,7,1)
2013-07-01

julia> today()
2014-09-01

julia> dt = date(2013,7,1)
2013-07-01

julia> dt = datetime(2012,6,30,18,59,50,0,CST)
2012-06-30T18:59:50 CDT

julia> datetime(2013,7,1,12,0,0,0,UTC)
2013-07-01T12:00:00 UTC

Until Julia 0.4, you should stick with this.

Upvotes: 2

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