|There's more than one way to do things|
Each queue element should have two elements which can individually be dequeued Like a queue within a queue
If "each queue element contains 2 elements that can be individually dequeued"; what is the difference between a your 2D-queue containing one, two-element element; and a normal queue containing two, single-element elements pushed by the same producer at the same time?
With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
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.
In reply to Re^3: How to create a two dimensional queue in Perl