I think the metric should be branching, so functions with fewer branches are better than functions with more branches. And the reason is that it’s easier to wr

I think the metric should be branching, so functions with fewer branches are better than functions with more branches. And the reason is that it’s easier to write tests for functions with few branches without overlooking paths through the function. Same goes for reasoning, it’s easier to consider all paths through a function if there’s fewer. I see number of lines as an imperfect proxy for complexity.