Beefy Boxes and Bandwidth Generously Provided by pair Networks
"be consistent"
 
PerlMonks  

comment on

( [id://3333]=superdoc: print w/replies, xml ) Need Help??

This last solution from jethro is clever and effective, but, with such a problem, I would rather take the solution offered by Corion. I think that, faced with a problem like that, it is often better to think is terms of several simple regexes checking individual conditions, rather than building a single more complicated regex to match all cases. Assuming I have to read and understand some undocumented code, I certainly prefer to have something like:

do_something() if /\d/ and /[A-Za-z]/;

which tells me immediately that I need at least one letter and one digit, rather than:

do_something() if /\d[a-zA-Z]|[a-zA-Z]\d/;

which is quite clear in term of what it does, but less obvious in terms of what the intended underlying rule should really be. Having said that, I also sometimes use these types of supposedly clever shortcuts when they save some typing. But that often implies that I need to add a comment to explain the whole shebang, meaning that I don't save so much typing after all.


In reply to Re: regex help by Laurent_R
in thread regex help by kelscat18

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Are you posting in the right place? Check out Where do I post X? to know for sure.
  • Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
    <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
  • Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
  • Want more info? How to link or How to display code and escape characters are good places to start.
Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?
Chatterbox?
and the web crawler heard nothing...

How do I use this?Last hourOther CB clients
Other Users?
Others cooling their heels in the Monastery: (2)
As of 2024-03-19 06:37 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found