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Programming language trade-offs

Note: This article was originally published at Planet PHP on 1 October 2010.
Planet PHP

There has been much discussion of late in Drupal about Object-Oriented Programming. That's not really surprising, given that Drupal 7 is the first version that has really tried to use objects in any meaningful way (vis, as something other than arrays that pass strangely). However, too much of the discussion has boiled down to "OMG objects are inflexible so they're evil!" vs. "OMG objects are cool, yay!" Both positions are harmfully naive.

It is important for us to take a step back and examine why one particular programming paradigm is useful, and to do that we must understand what we mean by "useful".

Programming paradigms, like software architecture, have trade-offs. In fact, many of the same methods for comparing architectural designs apply just as well to language design. To do that, though, we need to take a step back and look at more than just PHP-style objects.

Warning: Hard-core computer science action follows. If you're a coder, I recommend getting a cup of $beverage before continuing, as it could take a bit to digest although I've tried to simplify it as much as possible. There's fairly little Drupal-specific stuff here so hopefully it should be useful to any PHP developer.

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