Beefy Boxes and Bandwidth Generously Provided by pair Networks
XP is just a number
 
PerlMonks  

comment on

( [id://3333]=superdoc: print w/replies, xml ) Need Help??
I read a file into an array, and want to take just the first thing on each line and return a list of those. I was overwhelmed with TIMTOWTDI. I typed and backspaced 3 times already. Why? Because there should be a nicer way to write it. But it turned into a distraction. If there was only one obvious way to do something, I would have just done it and be done with it. But Perl can be "fun" besides...

So, I thought I'd throw it out as a challange.

Given: variable @list contains a bunch of lines of the form

xxxxx : yyyyy blah blah
Where the :stuff is optional, and the line may be blank in which case it should be ignored. Return a list containing just the xxxxx parts. Specifically, remove blank lines, and truncate each line at the first : (if present) and get rid of trailing whitespace after the xxxxx part (including the possible "\n".

Any takers?

—John


In reply to golf anyone? (taking first field) by John M. Dlugosz

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 perusing the Monastery: (3)
As of 2024-04-20 00:40 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found