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Let's begin to learn what's Iterator Pattern.

What's difference between __str__ and __repr__ ?

Let's begin to learn what's Adapter Pattern.

Let's start to learn Docker.

Let's begin to learn what's Chain of Responsibility Pattern.

Let's begin to learn what's Observer Pattern.

Let's begin to learn what's strategy Pattern.

Let's begin to learn what's Decorator Pattern.

Let's begin to learn what's Builder Pattern.

Let's begin to learn what's Abstract Factory Pattern.