Avoiding doing unnecessary work is something all developers should strive to, experienced or not. Maybe in that case that won't make any difference. But, say, a

Avoiding doing unnecessary work is something all developers should strive to, experienced or not. Maybe in that case that won't make any difference. But, say, a method call in a loop often sould be done outside the loop. Doing it here but not there leads to inconsistent style. Also depending on the language and compiler that might actually make a difference sometimes. I'm not going to write code that assumes a certain interpreter/compiler behavior.