my ($subdir, @keywords) = split;

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is the same as 

my @array = split;
my ($subdir, @keywords) = @array;

[download]

is the same as 

my @array = split;
my $subdir   = $array[0];
my @keywords = @array[1..$#array];

[download]

In other words, $subdir gets whatever's in front of the first space, and @keywords gets all the other fields returned by split (if any).

In reply to Re: what does my ($subdir, @keywords) = split; do. by ikegami
in thread what does my ($subdir, @keywords) = split; do. by richill

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