Re^2: Quicly extracting odd index elements in the array with grep

in reply to Re: Quicly extracting odd index elements in the array with grep
in thread Quicly extracting odd index elements in the array with grep

GrandFather

can you explain me the following line. I am not able to understand what is that doing exactly.
my @var = map {$arr$_} grep {$_ & 1} 1..$#arr;

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Re^3: Quicly extracting odd index elements in the array with grep by ikegami (Patriarch) on Aug 10, 2006 at 05:51 UTC
Read the comments from the bottom up. `my @var = # Store the elements in @var. map { $arr[$_] } # Get the elements at the remaining indexes. grep { $_ & 1 } # Filter out the even indexes. 0..$#arr; # Create a list of @arr's indexes.` [download]	[reply] [d/l]

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Re^3: Quicly extracting odd index elements in the array with grep
by ikegami (Patriarch) on Aug 10, 2006 at 05:51 UTC

my @var =          # Store the elements in @var.
map { $arr[$_] }   # Get the elements at the remaining indexes.
grep { $_ & 1 }    # Filter out the even indexes.
0..$#arr;          # Create a list of @arr's indexes.
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