[Dreami]

I don't think he meant compressing 5 lines of "normal code" into a one-liner. He meant, actually removing it. Maybe the logic it provides is not needed anymore, or you could do it somewhere else in a far more readable way (I'm thinking about abstraction levels)

[root_axis]

Sure, and I think we can all agree that this type of refactoring is useful, but I have worked with many developers that really take this anti-LoC idea to heart and end up producing difficult to read code because they are so focused on finding the most terse way to express logic.

[majewsky]

A favorite quip of mine is that I dislike Ruby because the entire community optimizes for one-liners.

[collyw]

Back in my days of writing Perl one liners were also kind of encouraged, because usually it would likely be more performant. At least thats what some instructors told us.