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---
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 , "<../IPutils.pm"; #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.
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
Read Where should I post X? if you're not absolutely sure you're posting in the right place.
Please read these before you post! —
Posts may use any of the Perl Monks Approved HTML tags:
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
| |
For: |
|
Use: |
| & | | & |
| < | | < |
| > | | > |
| [ | | [ |
| ] | | ] |
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.