[Gambas-user] problem with the CDate function

[Jussi Lahtinen]

Or just timezone...


Jussi

On Mon, May 7, 2018 at 10:08 AM, Gianluigi <bagonergi at gmail.com> wrote:

> It works correctly to me:
> Date() Is < Or = str_date
> 07/05/2018 00:00:00
> 07/05/2018 00:00:00
> It could be a version problem.
> Read here[0]
>
> Regards
> Gianluigi
> [0] https://lists.gambas-basic.org/pipermail/user/2018-April/063637.html
>
> 2018-05-07 2:28 GMT+02:00 PICCORO McKAY Lenz <mckaygerhard at gmail.com>:
>
>> please somebocy that can added a example code to wiki,
>>
>> this due in future this kind of problem will be happned again and this
>> important info will be forgoten!
>>
>> Lenz McKAY Gerardo (PICCORO)
>> http://qgqlochekone.blogspot.com
>>
>> 2018-05-06 18:47 GMT-04:00 Mayost Sharon <sharon at 455.co.il>:
>>
>>>
>>>
>>> ---------- Original Message -----------
>>> From: Benoît Minisini <g4mba5 at gmail.com>
>>> To: Gambas Mailing List <user at lists.gambas-basic.org>
>>> Sent: Wed, 2 May 2018 15:46:44 +0200
>>> Subject: Re: [Gambas-user] problem with the CDate function
>>>
>>> > Le 02/05/2018 à 15:38, Gianluigi a écrit :
>>> > >
>>> > >
>>> > > 2018-05-02 15:18 GMT+02:00 Mayost Sharon <sharon at 455.co.il
>>> > > <mailto:sharon at 455.co.il>>:
>>> > >
>>> > >     Hello
>>> > >
>>> > >     Operating system: Fedora 27 64 BIT
>>> > >     Gambas 3.10.0
>>> > >
>>> > >     I have a problem with the CDate function when I run the example
>>> that
>>> > >     appears in this
>>> > >     documentation:
>>> > >
>>> > >     It takes me back one day
>>> > >
>>> > >     I run:
>>> > >
>>> > >
>>> > >     Print CDate ("09/06/1972 01:45:12")
>>> > >
>>> > >     And it returns to me:
>>> > >
>>> > >     09/05/1972 22:45:12
>>> > >
>>> > >
>>> > > You must use Date and not CDate which locates the UTC date [0].
>>> > >
>>> > > Regards
>>> > > Gianluigi
>>> > > [0] https://en.wikipedia.org/wiki/Coordinated_Universal_Time
>>> > >
>>> >
>>> > No, it's not the problem.
>>> >
>>> > It's just that people must understand that CDate() interprets its
>>> > argument as an UTC date, and that Str() (hence Print) converts a date
>>> > into a local representation.
>>> >
>>> > So if you use CDate(), you must use CStr() to go back to the original
>>> > string. Otherwise, use Val() and Str().
>>> >
>>> > See the documentation about these functions. I think some non-american
>>> > examples should be added to make things clearer.
>>> >
>>> > Regards,
>>> >
>>> > --
>>> > Benoît Minisini
>>> >
>>> > --------------------------------------------------
>>> >
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>>> ------- End of Original Message -------
>>>
>>>
>>> Sorry
>>> I do not understand
>>>
>>> If I run this code:
>>>
>>> Public Sub Main()
>>>
>>>  Dim str_date As String
>>>
>>>  str_date = "05/07/2018 00:00:00"
>>>
>>>
>>>  If Date() > Date(str_date) Then
>>>    Print "Date() Is > str_data"
>>>   Else
>>>    Print "Date() Is < Or = str_date"
>>>   Endif
>>>
>>>  Print Date()
>>>  Print Date(str_date)
>>>
>>> End
>>>
>>> I get this output:
>>> Date() Is > str_data
>>> 05/07/2018 00:00:00
>>> 05/06/2018 00:00:00
>>>
>>>
>>> it seems strange that the current date today is:
>>> Month: 05
>>> Day: 07
>>> Year: 2018
>>>
>>> Then the value of str_date should equal the value of Date ()
>>>
>>> What should I fix in the code to make it good
>>>
>>> Thank you
>>>
>>>
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>>
>>
>>
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>
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