my $string = "aXbcXdefgXhijXklmnopqrXstuvwXyz";
my $target = 'X';
my @offsets;
while ( $string =~ /$target/g ) {
push @offsets, pos($string) - length($target);
}
print "@offsets\n";
Does the trick for me, and it scales to arbitrary substrings.
(Update: hoisting length($target) out of the loop is a no-brainer. Alas, I had no brain at the time.)
-
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.
|