or even 

$length += !!$_->[2] for @select;

[download]

:)

(the !! is only required if you don't want to make assumptions that a "true" value in $_->[2] is always represented as 1)

In reply to Re^4: Length of multidimensional array based on the particular index value by Eliya
in thread Length of multidimensional array based on the particular index value by k_manimuthu

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