[Gambas-user] problem with the CDate function

PICCORO McKAY Lenz mckaygerhard at gmail.com
Mon May 7 02:28:05 CEST 2018


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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> >
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> >
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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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