|
It was this way on PI as well.
Bear in mind that the <-1> syntax was an
"accident" - as originally implemented the search mechanism simply decremented
to zero or the end of the string, and some bright spark realised that if you
started with a negative number then it would always hit the end of the string
rather than zero. So the counter-intuitive result that appending null to null
gives null isn't so strange. This behaviour is probably copied from
"original Pick".
We get round it by initialising the variable to "*", and
then doing a DEL <1> when we've finished.
Cheers,
Wol From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Louis Windsor Sent: 03 February 2004 06:17 To: U2 Users Discussion List Subject: Re: VARIABLE<-1> = '' Inconsistent behaviour I think this is a "feature".
Universe does NOT insert non-significant nulls. In
other words your first two
(A<-1> = '') do not do anything! It is consistent in its'
behaviour as you can
count on it to do the above. It has done this as long as I
remember.
I found this out through bitter experience.
Louis
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