From: stt@houdini.camb.inmet.com (Tucker Taft)
Subject: Re: Most efficient way to check for null string?
Date: 1997/06/20
Date: 1997-06-20T00:00:00+00:00 [thread overview]
Message-ID: <EC3C0x.E68.0.-s@inmet.camb.inmet.com> (raw)
In-Reply-To: 5oe038$2d0$1@goanna.cs.rmit.edu.au
Dale Stanbrough (dale@goanna.cs.rmit.EDU.AU) wrote:
: I think the following are both equally readable, so which is likely
: to be more efficient?
: if Str = "" then
:
: if Str'Length = 0 then
As usual, it depends on the implemenation. I suspect the second will
be the more efficient on most compilers. If you really want to
shave cycles, the following will likely be the most efficient:
if Str'Last < Str'First then ...
: Dale
-Tucker Taft stt@inmet.com http://www.inmet.com/~stt/
Intermetrics, Inc. Burlington, MA USA
next prev parent reply other threads:[~1997-06-20 0:00 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
1997-06-20 0:00 Most efficient way to check for null string? Dale Stanbrough
1997-06-20 0:00 ` Tucker Taft [this message]
1997-06-21 0:00 ` Robert A Duff
1997-06-21 0:00 ` Robert Dewar
1997-06-23 0:00 ` Richard Kenner
1997-06-23 0:00 ` Tucker Taft
1997-06-20 0:00 ` Robert A Duff
1997-06-20 0:00 ` Robert Dewar
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