Re: ... for (@

x= , the repetition assignment operator, only works on scalars.

So you can do:

my $str = 'ab';
$str x= 2;
print $str;
# 'abab'
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You don't say what you want as output, but maybe you are looking for:

#!/usr/bin/perl

use warnings;
use strict;

$\ = $/;

@_ =  ( 'a' .. 'b' ) x 2;
print for @_;
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Output:

a
b
a
b
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edit: show example of repetition assignment on a scalar

The way forward always starts with a minimal test.

Comment on Re: ... for (@_) x= 2; Select or Download Code

Replies are listed 'Best First'.
Re^2: ... for (@_) x= 2; by rsFalse (Chaplain) on Dec 28, 2015 at 21:27 UTC
Yes, firstly, I wanted so for an output, but later I found that behaviours are interesting with using 'x=' operator :) . I experimented if I can multiply the array in 'for' sentence with using 'x='.	[reply]
Re^3: ... for (@_) x= 2; by jeffa (Bishop) on Dec 28, 2015 at 22:00 UTC
Just in case this is not obvious, map tends to produce a more consistent solution in these situations: `perl -le'print map $_ x=2, ("a" .. "f")'` [download] jeffa L-LL-L--L-LL-L--L-LL-L-- -R--R-RR-R--R-RR-R--R-RR B--B--B--B--B--B--B--B-- H---H---H---H---H---H--- (the triplet paradiddle with high-hat)	[reply] [d/l]