You make a good point about splitting on a record separator within possibly malformed records. Based upon the OP's regex, it appears that the pattern's stable--with one space after the semi-colon. However, we can ask split to 'test' the format of the input, like this:
my $info = (split /\s*;\s*/, $dat);
This will return the info the OP wants, whether there are spaces before or after the semi-colon, or not.
And within a regex on the OP's data:
my $dat = 'DR Pfam; PF00070; Pyr_redox; 2.';
$dat =~ /;\s*(\w+)\s*;.+;/ and say $1; #prints PF00070
It was a good call to address this issue...
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>
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
Want more info? How to link
or How to display code and escape characters
are good places to start.