Hi, I'm trying to 'convert' the following code into an oneliner
But I can't.

my %sec;
my $newsecret;
for my $char (split //, $secret){
  next if exists $sec{$char};
  $newsecret .= $char;
  $sec{$char}++;
}
[download]

Ok this code should delete all multiple chars in $secret. The result is in $newsecret afterwards.

Now I tried it with a map-Statement:

$newsecret = join '', map { ??? } split //, $secret;
[download]

But what has to be written into the { } part ?
I'd tried this one:

my $newsecret = join '', map { my $char=$_; $_='' if exists $sec{$_}; 
+$sec{$char}++} split //, $secret;
[download]

But that results in numberfilled array $newsearch string.

Any ideas ? Thanks

-----------------------------------
--the good, the bad and the physi--
-----------------------------------
[download]

---

---

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! —

• How do I compose an effective node title?
• How do I post a question effectively?
• Markup in the Monastery

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:
	&		&
	<		&lt;
	>		&gt;
	[		&#91;
	]		&#93;

Link using PerlMonks shortcuts! What shortcuts can I use for linking?

See Writeup Formatting Tips and other pages linked from there for more info.