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Perl: remove whitespace of a String

Perl: remove whitespace of a String
{filelink=13225}

sub trim
{
    my @out = @_;
    for (@out) {
        s/^s+//;
        s/s+$//;
    }
    return @out == 1
              ? $out[0]
              : @out;
}
print trim('Welcom to home  ');

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