Search for
unique, you'll find plenty of references, as this question comes up fairly often.
update: Well most of those nodes discuss how to create a completely unique list, which is not exactly what you want, so here:
update2: Fixed some yucky code... =)
my @in = (1,2,3,4,4,4,5,5,6,7,8,9,9,1,2,3,3);
## one way
my @out1 = $in[0];
do { push @out1, $_ if $out1[$#out1] ne $_ } for @in;
## or another way
my $t = '';
my @out2 = grep { $t eq $_ ? 0 : ($t = $_, 1) } @in;
Of course, there are many ways to slice this particular cat...
MeowChow
s aamecha.s a..a\u$&owag.print
-
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.