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

Explain xkcd: It's 'cause you're dumb.
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The punchline is in reference to this oft-quoted joke by jwz:
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I totally agree. It seems like i am alywas cleaning up some code mess and failure to fully catch the most basic of errors. I play chess and i program likewise. Yet, there are those who write, maybe nice, pretty, and simple code but forget to take into account when something goes out of range. I slip in a few lines of try-catch find the issue and get it fixed. Lots of programming gone awry because things grew and they did not do a quick structure change. To much duct tape and spackle. There is alywas programming catchup. There is alywas the priority's list that never goes away. With money tight you end up doing the job of three people. It sucks and gets u upset quick. Especially dealing with people who want it yesterday and for nothing and know even less.
 
 
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 05:15, 22 February 2013

I totally agree. It seems like i am alywas cleaning up some code mess and failure to fully catch the most basic of errors. I play chess and i program likewise. Yet, there are those who write, maybe nice, pretty, and simple code but forget to take into account when something goes out of range. I slip in a few lines of try-catch find the issue and get it fixed. Lots of programming gone awry because things grew and they did not do a quick structure change. To much duct tape and spackle. There is alywas programming catchup. There is alywas the priority's list that never goes away. With money tight you end up doing the job of three people. It sucks and gets u upset quick. Especially dealing with people who want it yesterday and for nothing and know even less.