Re:Law of Demeter and immutability
by hinkley on Friday September 30, 2016 @01:02PM
(#12613669)
There are two other aspects of Demeter that are more about how humans work and where they make mistakes.
One is that merges are hard (error prone), and mixing concerns results in many more merge conflicts. I 'joke' that half of the tenets of clean code are really about avoiding merge conflicts, but I'm quite serious.
Add to this that Demeter means that you can use local reasoning in many situations, which complements the structure of human working memory. I cannot juggle twelve facts when debugging issues, and Demeter helps you push potentially confounding issues elsewhere where they cannot distract from the matter at hand.
One is that merges are hard (error prone), and mixing concerns results in many more merge conflicts. I 'joke' that half of the tenets of clean code are really about avoiding merge conflicts, but I'm quite serious.
Add to this that Demeter means that you can use local reasoning in many situations, which complements the structure of human working memory. I cannot juggle twelve facts when debugging issues, and Demeter helps you push potentially confounding issues elsewhere where they cannot distract from the matter at hand.