Difference between revisions of "Talk:1171: Perl Problems"

Explain xkcd: It's 'cause you're dumb.
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(Undo revision 27490 by Elsbree (talk))
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The punchline is in reference to this oft-quoted joke by jwz:
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I don't know yet. I have personally hand built and fully tetsed a further 60 units so far. I am meeting the manufacturer today (Thursday) to see how many they have made. They have enough parts for 400, but I do not expect anywhere near that many to be fully ready, maybe another 100 or so if we are lucky. Yesterday at lunchtime when I met with them they had placed parts on 320 boards apart from the connectors which need manual placing. Also all the QFNs go through a visual check and the tuner in particular is manually touched up. I will still need to test all these and rework the HPF first. Until they're tetsed I won't know, however I have personally visted them three times now over the past ten days already and I am fairly confident.Busy times.Howard
 
 
Some people, when confronted with a problem, think "I know, I'll use regular expressions." Now they have two problems. - Jamie Zawinski
 
 
 
There's actually a double joke here: The song "99 Problems" is by Jay-Z, and the regex joke is by jwz.
 
--[[Special:Contributions/173.8.183.86|173.8.183.86]] 08:33, 8 February 2013 (UTC)
 
:[Jj][A-Za-z]*[\b\-]*[Zz][A-Za-z]* [[User:Elsbree|Elsbree]] ([[User talk:Elsbree|talk]]) 17:31, 8 February 2013 (UTC)
 
 
 
I don't understand why so many people have problems with regular expressions. They are really easy ... compared to gramatics or turing machines. :-)
 
(Of course, it is good idea to verify that the problem you are trying to solve with regular expressions IS regular. While perl is sometimes capable of doing stuff outside real regular expressions, it's rarely worth it.) -- [[User:Hkmaly|Hkmaly]] ([[User talk:Hkmaly|talk]]) 10:23, 8 February 2013 (UTC)
 
 
 
Wait, how do we rule out that the Regular Expressions might've helped Cueball, and that now, in fact, he has only 4 problems? [[Special:Contributions/220.224.246.97|220.224.246.97]] 15:52, 8 February 2013 (UTC)
 
 
 
Great explanation today, folks. --[[User:DanB|DanB]] ([[User talk:DanB|talk]]) 20:10, 8 February 2013 (UTC)
 
 
 
The stuff about preg_match is NOT '''perl''' at all.  It is '''php'''.
 
'''perl''' has regular expression matching as part of the language, not as a function.
 
In perl, you would normally only get the firrst match, unless you used the 'g' flag.
 
The comparable initial match might be:  <code>@matches = $str =~ m/([A-Za-z])/g;</code>
 
But if you only wanted the first match, it would be more common to write something like <code>$firstMatch = $str =~ m/([A-Za-z])/ && $1;</code>
 
I think that if you do want all the matches in perl, you are better off doing it in an explicit loop, so as to avoid creating an unneeded array.
 
(Perl now considers using the "complete match" token to be a less than ideal thing to use, which is why I added the parens and used <code>$1</code> instead of <code>$&</code>.)  --[[User:Divad27182|Divad27182]] ([[User talk:Divad27182|talk]]) 06:33, 9 February 2013 (UTC)
 
 
 
If you're havin' Perl problems I feel bad for you, son - I got 99 problems, but regex ain't one. {{unsigned|‎150.252.114.126}}
 
 
 
[User talk:Divad27182] is right. I took the liberty to remove the Perl reference in that line. [[Special:Contributions/87.165.125.229|87.165.125.229]] 10:05, 11 February 2013 (UTC)
 
 
 
[[Special:Contributions/192.193.116.137|192.193.116.137]] 15:47, 11 February 2013 (UTC)Is there not an "off by one" joke in here also?
 

Revision as of 22:09, 21 February 2013

I don't know yet. I have personally hand built and fully tetsed a further 60 units so far. I am meeting the manufacturer today (Thursday) to see how many they have made. They have enough parts for 400, but I do not expect anywhere near that many to be fully ready, maybe another 100 or so if we are lucky. Yesterday at lunchtime when I met with them they had placed parts on 320 boards apart from the connectors which need manual placing. Also all the QFNs go through a visual check and the tuner in particular is manually touched up. I will still need to test all these and rework the HPF first. Until they're tetsed I won't know, however I have personally visted them three times now over the past ten days already and I am fairly confident.Busy times.Howard