clean code - two decades later
Abstract
A task is NOT DONE unless it’s CLEAN and TESTED. Mastering Code Smells is the first step towards Clean Code mastery.
Stuff that grew too big ⇒ SRP violation:
- monster method
- functions shall be SMALL (smaller than a screen)
- flat function (linear code with no indentation)
- if
- anemic else ⇒ guard clauss
- superficial if ⇒ split in 2 functions
- for
- split loop ⇒ use FP (Stream)
- switch
- is alone in a function, with one-line / case
- catch
- global exception handler
- god class
> 200* lines- mixed layers of abstraction
- split unrelated flows
- many parameters
> 4- compute one inside
- break method
- value objects
- small immutable, to change an attribute ⇒ produce a modified copy
- no persistent identity (PK)
- equals uses all fields
- primitive obsession
- mitigate by creating micro-types
- heavy lambda
- flags
- data clumps
- feature envy
- data classes
- complex loop
- accumulators
- imperative FP
- stream wreck
- mutable data
- confused variable