[vectorpush]

It's a double-edged sword. The code's behavior is apparent in that simple example, but things get considerably more difficult to understand when you're dealing with monkey patched methods and dangerously clever method_missing magic in non standard library code.

[singingfish]

Yeah, I had to deal with a perl port from a ruby library that had kept most the rubyisms in. The really disturbing thing about it was the Frankenstein levels of autovivification involved. Fortunately someone (not me) is going to get paid deal with that soon.