Demorgan's law avoidance is why I like unless. In this simple case, you can reverse eq to ne while chaning unless to if, so it's still simple.

But if the condition is complex, putting a ! in front of the whole thing means more parens  if (!( ...real stuff )) { ... and I don't like the extra layer with only one char outside them! Reversing the Real Stuff would mean changing ands to ors and inverting whatever, and is easy to mess up. Plus I'd rather express it the way that's closest to the problem domain.

In reply to Re: Re: if/unless and chaining by John M. Dlugosz
in thread if/unless and chaining by John M. Dlugosz

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