I ask myself a couple of questions to decide when to abstract code to de duplicate it. 1. Is this domain logic or plumbing code?(for instance would this logic

I ask myself a couple of questions to decide when to abstract code to de duplicate it. 1. Is this domain logic or plumbing code?(for instance would this logic be described in a spec for the application) 2. How many times will these be duplicated? 3. How abstractable is it? 3.a. to abstract it will I have to do anything tricky like pass functions around use reflection? 3.b If I abstract this logic into a function is there a good concise name for it?