If you use closures, you can force a different internal state for each range operator, e.g.: sub mkrange {
my ($r1, $r2) = @_;
return sub { /$r1/../$r2/ };
}
my $range1 = mkrange(qr/FIRST/, qr/SECOND/);
my $range2 = mkrange(qr/THIRD/, qr/FOURTH/);
while (<DATA>) {
if ( $range1->() ) {
print "R1: $_";
}
if ( $range2->() ) {
print "R2: $_";
}
}
__END__
junk
FIRST
1
2
3
SECOND
junk
THIRD
4
5
6
FOURTH
junk
-
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.
|