Beefy Boxes and Bandwidth Generously Provided by pair Networks
Your skill will accomplish
what the force of many cannot

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
So, 5 years ago I was trying to solve (efficiently) 80 regexs run over a 10K document. That quest ended in success. Now I am wrestling with filtering out lines of an array that match any entry of an array of regexs I am giving 'grep' a shot but am having a problem generalizing a single test into multiple tests.

Thanks for the quick response. Another nifty tool!!

Perldoc shows:

@foo = grep {!/^#/} @bar; # weed out comments
I want to replace that single regex with a loop over an array of 'qr's.
my @regs =( qr/split/ , qr/se.d/ , qr/open/, qr/print/, # might be another 100 in here # ); my @bar; my @foo; push @foo, "still empty"; open INP , "<../"; #random code while (<INP>){ push @bar, $_; } print @bar, "\n--EOD-----------\n"; @foo = grep{ # !/^\s*#/ #sample from Perldocs #{ #causes compile error #( #causes compile error my $final =1; #default true foreach my $r (@regs){ $final = 0 if ( $r ); #match means drop this line } $final; #last value of the block hmmmmm #) #} }@bar; print @foo;
'return' shouldn't be the correct mechanism to tell grep true/false. But when I run this, the second print (@foo) produces nothing.

It is always better to have seen your target for yourself, rather than depend upon someone else's description.

In reply to grep with looped tests by Wiggins

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 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 scrutinizing the Monastery: (3)
As of 2022-07-06 19:39 GMT
Find Nodes?
    Voting Booth?

    No recent polls found