Re: table reset
[
Date Prev][
Date Next][
Thread Prev][
Thread Next]
[
Date Index]
[
Thread Index]
- Subject: Re: table reset
- From: Markus Huber <pulse@...>
- Date: 2004年7月10日 20:04:00 +0200 (BST)
> Ashwin Hirschi wrote:
> Mind you, the first scenario would still need to be extended to process
> the pending data in Lines, after the while loop.
In my case the last empty line is always there but you are right I
should use a more robust and flexible way so I enhanced the nil test:
local Lines={}
while true do
local Line=Handle:read('*line')
if Line==nil or Line=='' then
-- process lines here; e.g. with iterator
Lines={}
if Line==nil then break end
else
table.insert(Lines,Line)
end
end
But this can be done better so I will end up here. Also I added the
carriage-return strip.
local Lines={}
repeat
local Line=Handle:read('*line')
Line=Line and string.gsub(Line,'\r','')
if Line==nil or Line=='' then
-- process lines here; e.g. with iterator
Lines={}
else
table.insert(Lines,Line)
end
until Line==nil
> Jamie Webb wrote:
> The first, clearly. The second is needless obfuscation, and would run
> slower. In fact, as written, it won't work at all. The declaration of
> Lines needs to be moved outside the loop.
Thank you for the hint. I have seen this bug a few minutes after posting
the code. Conclusion: Extracting the basic concept from a bigger code
block is often the best way to find bugs and tune up the code.
--
Markus