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Decorator (Programming)

Decorator programming me ek powerful concept hai — ek function (ya class) jo kisi doosri function…

Overview

Decorator (Programming) — Quick Facts

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Property: Detail

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Name: Decorator (Programming)

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Category: Language Feature, Metaprogramming,…

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Purpose: Function/class ka behavior extend…

Topic 1

Infobox

📚 | Property | Detail | |---|---| | Name | Decorator (Programming) | | Category | Language…

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Kya Hai Decorator

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Gift = Original function (core…

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Wrapper = Decorator (extra layer —…

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Gift ke andar kya hai woh change…

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Multiple wrappers laga sakte ho:…

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How Decorators Work — Conceptual

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Tumhara processOrder() function…

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Tumhe har order ke liye logging…

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Tumhe auth check bhi chahiye —…

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Tumhe timing bhi chahiye — tumne…

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Mermaid Diagram — Decorator Execution Flow

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Layered execution: Har decorator…

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Original function untouched: Core…

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Early exit possible: @requireAuth…

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Order matters: Decorator order…

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Common Use Cases

🔑 | Use Case | What Decorator Does | Without Decorator | Benefit | |---|---|---|---| |…

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Decorators in Different Languages

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Python/TypeScript: Decorators…

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Java/C#/Kotlin: Annotations add…

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Conceptually similar intent —…

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Stacking / Chaining Decorators

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Multiple decorators ek function…

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Har decorator ek layer add karta…

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Execution order: Outermost…

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@requireAuth → @timing → @log =…

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Decorator vs Decorator Pattern

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Language-level decorators inspired…

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Design pattern = architectural…

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Real-Life Analogies

📚 | Analogy | Original | Decorator | Result | |---|---|---|---| | Gift Wrapping | Gift…

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Common Mistakes

💡 | Mistake | Problem | Solution | |---|---|---| | Losing function metadata | Wrapped…

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Best Practices

🎯 1. Single Responsibility per decorator. Ek decorator = ek concern. @log sirf logging…

Comparison

Decorator vs Decorator Pattern

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What: Language-level syntax for…

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Mechanism: Function wrapping via…

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Syntax: @decorator (Python/TS)

Diagram

Visual Flow

📊 Diagram visualization — details in narration

Quiz — Question 1

Decorator (Programming) ka sabse sahi definition kya hai?

Quick Quiz

Quiz — Question 2

Decorator (Programming) ka 'Name' kya hai?

Complete! 🎉

Decorator (Programming) Complete!

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