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Probably I do not know your specific problem, but your regex seems to be an overkill, a simple split is not sufficient for you?
my $str = 'somename 1000 0.24 280 2 2576.9 2731.9 12.0 4195.3' +; my @array = split /\s+/, $str;

update: It seems to me you have two goals: to verify the format of your input and to split it to fields. I think it is much more readable in two separate steps:

die "invalid input format: '$str'" if $str !~ / \A [a-z]\w* (?: \s+ [\d.]+ ){8} \z /ixo; my @array = split /\s+/, $str;

In reply to Re: Question: Capturing a repeated pattern by rubasov
in thread Question: Capturing a repeated pattern by robmderrick

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