Although not specified in documentation, as with several other
longstanding features, this has been true since I've been using Rb
with 1.0. I've used this quite a bit, especially before celltags, to
retain and restore the exact original number that a user has entered
or imported into a dataset which he/she might later elect to have
changed to some other number format.
ColumnCount refers to the 64 visible columns(and this is implied in
current documentation), but there are 255 accessible columns. That's
why we don't get an out of bounds exception when inadvertently
referencing columns beyond ColumnCount within existing rows, as we
have all done on countless occasions.
Nontheless, it is obvious that Rs does not explicitly document this
feature and that has been intentional in my view. One of the early
User's Guides very clearly referred to the use of these columns, but
this was removed in later editions. I'm also guessing that this has
been the subject of one of Joe Strout's chilling warnings
"Undocumented features can be changed without warning..."
Best regards,
Jack
On Mar 1, 2006, at 2:14 PM, Karen wrote:
On Mar 1, 2006, at 5:03 PM, Phil M wrote:
// 64 is the first invisible column in a listbox
Huh? The listbox as built in supported invisible columns that you
can use above listcount and it's supported?
- karen
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