In INFORMATION and IN2 flavor accounts, if
_expression_ is an empty stringand the new element is appended to the end of the dynamic array, the end of
a field, or the end of a value, a delimiter is appended to the dynamic array,
field, or value. Use the
-EXTRA.DELIM option of the $OPTIONS statementto make the REPLACE function work as it does in IDEAL, PICK, and
REALITY flavor accounts.
In my opinion this behaviour is still unexpected and here is why I say so:
If Information behaves the same as PICK as you say, then the behaviour is still contrary to documentation because in the example I gave below, a @FM was still appended even if the string to be added was empty: i.e.
A = 'abc'
A<-1> = ''
A<-1> = 'def'
will result in 3 fields. According to the REPLACE extract you quoted, A<-1> = '' should not add a field mark regardless of whether A is empty or not for PICK flavour.
Marco
Marco,
As some previous replies were saying, the behaviour you describe is normal
and documented. The explanation for this is found in the "REPLACE" Basic
function, which is the equivalent for the angle brackets notation at the
left of an assignment operator ("=") for dynamic arrays handling.
For more information, please refer to the Basic documentation manual (File
"BASIC.pdf" in the CDROM library)
Here is an excerpt of the documentation :
----
REPLACE function
Syntax
REPLACE (_expression_, field#, value#, subvalue# { , | ; } replacement)
REPLACE (_expression_ [ ,field# [ ,value#] ] ; replacement)
variable < field# [ ,value# [ ,subvalue#] ] >
.../...
In IDEAL, PICK, PIOPEN, and REALITY flavor accounts, if replacement is an
empty string and an attempt is made to append the new element to the end
of the dynamic array, field, or value, the dynamic array, field, or value
is left
unchanged; additional delimiters are not appended. Use the EXTRA.DELIM
option of the $OPTIONS statement to make the REPLACE function append
a delimiter to the dynamic array, field, or value.
.../...
----
The fact is that "UniVerse" is mainly designed to reproduce the behaviour
of legacy products in the "Pick" family. In this case, the implementation
of the "INFORMATION" and "IDEAL" flavour followed the default behaviour in
"Pick" native products.
I hope this answered your question.
Regards,
Hervé BALESTRIERI
Support Technique Avancé - IBM Data Management - Produits "U2"
----- Forwarded by Herve Balestrieri/France/IBM on 03/02/2004 09:35 -----
Marco Manyevere
<[EMAIL PROTECTED]
.com> cc:
Sent by: Subject: VARIABLE<-1> = '' Inconsistent behaviour
u2-users-bounces@
oliver.com
03/02/2004 05:55
Please respond to
U2 Users
Discussion List
Hi All,
Consider the program:
A = ''
A<-1> = ''
A<-1> = ''
A<-1> = 3
A<-1> = ''
A<-1> = 4
PRINT A<3>
I expect it output '3' but it outputs '4'. Whats the explanation? I'm on UV
9.6 [NT] running information flavour.
Regards,
Marco
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