Mastering Modern Perl: Writing Efficient and Maintainable Code/

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Solution: Sum All Elements of a Nested Array

Solution: Sum All Elements of a Nested Array

See the solution to summing all elements of a nested array.

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Solution

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# @nested_array is already defined.
my $sum = defined;
foreach my $array (@nested_array) {
    $sum = $sum + $_ for @$array;
}
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