Le Mar 7, 2008 à 2:54 PM, Jonas Maebe a écrit :
On 03 Mar 2008, at 17:16, Damien Gerard wrote:
In any programs, a lot of tests on empty strings are made.
The following made the work :
if Length(s) <> 0 then ...
or
if s <> '' then ...
In a lot of cases, the real length is no needed, just to know if
the string is empty or not.
That is what "if s <> '' then" checks for. This is already generated
as optimally as possible.
In a previous thread, I have ask the difference between (Length(s) =
0) and (s = '')
Copy paste a answer :
if s = '' then ...
of this one
if Length(s) <> 0 then ...
Both generate the same code.
Consequently, it can not be the same code. Otherwise I understood
nothing :)
--
Damien Gerard
[EMAIL PROTECTED]
"Intelligence is 10 million rules."
-- Douglas Lenat
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