Re^2: Length of multidimensional array based on the particular index value

Replies are listed 'Best First'.
Re^3: Length of multidimensional array based on the particular index value by BrowserUk (Patriarch) on Feb 24, 2011 at 10:33 UTC
it would have to be: `do { $length++ if $_->[2] } for @select;` Can also be: `$_->[2] and $length++ for @select;` [download] Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error. "Science is about questioning the status quo. Questioning authority". In the absence of evidence, opinion is indistinguishable from prejudice.	[reply] [d/l] [select]
Re^4: Length of multidimensional array based on the particular index value by jwkrahn (Abbot) on Feb 24, 2011 at 10:48 UTC
And since `$_->[2]` is either 0 or 1 you could do: `$length+=$_->[2] for @select;` [download]	[reply] [d/l] [select]
Re^3: Length of multidimensional array based on the particular index value by davido (Cardinal) on Feb 24, 2011 at 10:34 UTC
there you go taking all my fun away! Here's an awful contortion: `$_->[2]?length++:0 for @select;` [download] Dave	[reply] [d/l]
Re^4: Length of multidimensional array based on the particular index value by jwkrahn (Abbot) on Feb 24, 2011 at 10:40 UTC
`$_->[2]?length++:0 for @select;` [download] Why are you trying to increment the length function?	[reply] [d/l]
Re^4: Length of multidimensional array based on the particular index value by Eliya (Vicar) on Feb 24, 2011 at 10:43 UTC
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`)	[reply] [d/l] [select]