Wacce takaicin OOP na gida ne?

Question

Accepted Answer

Anti-patterns sune "mafita" masu maimaita waɗa kula suke kamar sannu amma suna lalata ƙira. Mafi yawan a OOP shine **God Object**, **zurfin iko na iko**, da **Anemic Domain Model**. ## God Object Aikin da ke sani da kuma yin abubuwa da yawa - tarwatsa Single Responsibility. ```java class AppManager { // 5,000 lines, touches everything void parseRequest() {} void queryDb() {} void renderHtml() {} void sendEmail() {} void logMetrics() {} void authUser() {} } // Fix: split into focused, cohesive classes (Router, Repo, View, Mailer...) ``` ## Zurfin iko na iko ```text Entity → LivingThing → Animal → Mammal → Carnivore → Feline → Cat → HouseCat ``` Kuwaji kowane matakin ɗin zuwa iyaye duka; canja kusa da saman yana tabowa a ko'ina (fragile base class). **Gyara:** bugawa da abubtuwa; gwada "has-a" iyawa fiye da zurfin "is-a" sarari. ## Anemic Domain Model Abubuwa waɗa ke zama akwatin getters/setters kawai da duka aiki yana zama a waje - OOP kawai cikin suna. ```java // ANEMIC: data with no behavior; rules live in a separate "service" class Order { List items; double total; /* only getters/setters */ } class OrderService { double calcTotal(Order o) { ... } } // logic exiled // RICH: behavior lives with the data it operates on class Order { private List items; double total() { return items.stream().mapToDouble(Item::price).sum(); } } ``` ## Sauran abubuwa da suka cancanta sunawa ```text → Yo-yo problem (jumping up/down a deep hierarchy to follow logic) → Circular deps (A needs B needs A) → Feature envy (a method that mostly uses another class's data) ``` ## Me yasa ya mahalaci Anti-patterns shine yadda kyakkyawar niyya ke lalata: God Object yawanci ya fara azaman ɗan karamin taimako, anemic model azaman "kawai DTOs", sai a ossify. Ba da sunaye yana ba da kawaa gida-gida jiya-jiyoyi ga ƙungiyoyi a bita ta zana zuwa, kuma kowane anti-pattern yana nuni kai-kai iyaye (SRP, abubtuwa, encapsulation) da ya warware shi.