Beefy Boxes and Bandwidth Generously Provided by pair Networks
more useful options

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
What you're missing is that the first parameter to grep is supposed to be an expression or a block of code, whose return value determines success or failure of each match. In your case, that return value is found by evaluating $username, which is most likely a true value. So then the grep gives you every single element from @ignore because the expression was true for every one of them. What you really meant to do is either a straight comparison:
grep $username eq $_, @ignore
or a pattern match:
grep /$username/, @ignore
Note that the second is still an expression, and gets evaluated with each element in @ignore aliased to $_ in turn. You can just write it in this short form because by default, matches are attempted against $_ unless otherwise specified. So the second form is exactly equivalent to this:
grep $_ =~ /$username/, @ignore

Makeshifts last the longest.

In reply to Re: grepping arrays by Aristotle
in thread grepping arrays by coldfingertips

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?

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

How do I use this? | Other CB clients
Other Users?
Others lurking in the Monastery: (4)
As of 2023-09-26 06:11 GMT
Find Nodes?
    Voting Booth?

    No recent polls found