The short answer is that I measure expensive by the fact that every call to an
@() function in UniVerse must be resolved by recourse to interrogating a
terminfo database. Why do this unnecessarily?
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The even shorter answer is: NEVER repeatedly do ANYTHING inside a loop
that will remain constant for each iteration and could be resolved
outside a loop.
That's language-, platform-, hardware-independent.
Shoot, it's applicable to life in general. Try it in your love life:
During
Tim,
Bravo! Well said!
Susan Lynch
F.W. Davison Company, Inc.
- Original Message -
From: Timothy Snyder [EMAIL PROTECTED]
To: u2-users@listserver.u2ug.org
Sent: Wednesday, August 29, 2007 10:43 AM
Subject: Re: [U2] Clearing a portion of a screen
So today, how do you measure
Try the command space(Width) per the following.
-Bill
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Joseph Ruiz
Sent: Tuesday, August 28, 2007 4:42 PM
To: u2-users@listserver.u2ug.org
Subject: [U2] Clearing a portion of a screen
I know this is an
It depends on what kind of terminal you're using. If you're using a terminal
emulator like Accuterm, there are command to set and clear an arbitrary
block on the screen. If you're using a vt100-type terminal or emulator, you
can set a scrolling region and then clear the region (by scrolling it).
Close, but the first column on the screen is #0. Your approach clears to the
end of the line for each row processed.
You can also use @(-3), which clears from current cursor position to end of
screen.
Tip: the @() function is quite expensive to evaluate - evaluate it once
(outside the loop)
?
Respectfully,
Mark Johnson
- Original Message -
From: Ray Wurlod [EMAIL PROTECTED]
To: u2-users@listserver.u2ug.org
Sent: Tuesday, August 28, 2007 6:19 PM
Subject: Re: [U2] Clearing a portion of a screen
Close, but the first column on the screen is #0. Your approach clears to
the end of the line
