Haha - so Scotland is already independent then ...

<grin>

It's not the parentheses that define the Boolean, it's the equality by the
way. Parentheses just force the precedence.


Brian

-----Original Message-----
From: u2-users-boun...@listserver.u2ug.org
[mailto:u2-users-boun...@listserver.u2ug.org] On Behalf Of Jim Swain
Sent: 01 August 2013 13:24
To: U2 Users List
Subject: Re: [U2] What is true

This is not true as when A='HELLO'  IF (A) returns true.

You use the parenthesis to set a Boolean variable, i.e  BRITISH = (COUNTRY =
'ENGLAND' OR COUNTRY = 'WALES')  etc   the var BRITISH is set to 1 when the
conditions inside the parenthesis are met, otherwise BRITISH is set to 0




Jim Swain - Developer
Telephone: +44 (0) 1295 701 810  | Fax: +44 (0) 1295 701 819

www.zafire.com

Consider the environment.  Think before you print.

This is a commercial communication from Zafire Group.
This communication is confidential and is intended only for the person to
whom it is addressed. If you are not that person you are not permitted to
make use of the information and you are requested to notify us immediately
that you have received it and then destroy the copy in your possession.
Zafire Group may monitor outgoing and incoming e-mails.  By replying to this
e-mail you consent to such monitoring.  This e-mail message and any attached
files have been scanned for the presence of computer viruses. However, you
are advised that you open attachments at your own risk.

Zafire Limited is a limited liability company registered in England and
Wales. Co. Reg. No. 3968255. Our registered address is Zafire House, Manor
Park, Banbury, Oxfordshire OX16 3TB. VAT Reg.No. 754 0161 55. Zafire
Aviation Software Limited is a limited liability company registered in
England and Wales. Co. Reg. No. 05577742. Our registered address is Zafire
House, Manor Park, Banbury, Oxfordshire OX16 3TB. VAT Reg.No. 874 5890 70

If you have any concerns regarding the content of this e-mail please contact
postmas...@zafire.com

-----Original Message-----
From: u2-users-boun...@listserver.u2ug.org
[mailto:u2-users-boun...@listserver.u2ug.org] On Behalf Of Tom Whitmore
Sent: 01 August 2013 13:17
To: U2 Users List
Subject: Re: [U2] What is true

Hi,
To add a little more to the discussion.  I know in UniVerse this is true and
I suspect it is true in other flavors of Pick.

If you wrap a variable in parenthesis it will be treated as a Boolean test.
For example:

A=''
IF (A) THEN CRT 'TRUE' ELSE CRT 'FALSE'   will result in FALSE.
A=0
IF (A) THEN CRT 'TRUE' ELSE CRT 'FALSE'   will result in FALSE.
A='HELLO'
IF (A) THEN CRT 'TRUE' ELSE CRT 'FALSE'   will result in TRUE.
A=1
IF (A) THEN CRT 'TRUE' ELSE CRT 'FALSE'   will result in TRUE.

I have found this useful in coding.

Tom Whitmore
RATEX Business Solutions

-----Original Message-----
From: u2-users-boun...@listserver.u2ug.org
[mailto:u2-users-boun...@listserver.u2ug.org] On Behalf Of Brian Leach
Sent: Thursday, August 01, 2013 4:40 AM
To: 'U2 Users List'
Subject: Re: [U2] What is true

To clarify

In multivalue, True is not False, where False is anything that is 'falsy'
i.e. zero or empty.
Obviously different than other languages, notably those where true is -1
(all bits set on a signed integer).

So:

A = "HELLO"
IF A THEN CRT A :" WORLD"

Gives HELLO WORLD

Regarding file variables, the best way to check for these being assigned on
UniVerse is to use FILEINFO().

If FileInfo(SomeUnassignedVariable, 0) Then
   Crt "This is an open file variable"
End Else
   Crt "This isn't"
End

Brian


_______________________________________________
U2-Users mailing list
U2-Users@listserver.u2ug.org
http://listserver.u2ug.org/mailman/listinfo/u2-users
_______________________________________________
U2-Users mailing list
U2-Users@listserver.u2ug.org
http://listserver.u2ug.org/mailman/listinfo/u2-users
_______________________________________________
U2-Users mailing list
U2-Users@listserver.u2ug.org
http://listserver.u2ug.org/mailman/listinfo/u2-users


_______________________________________________
U2-Users mailing list
U2-Users@listserver.u2ug.org
http://listserver.u2ug.org/mailman/listinfo/u2-users

Reply via email to