wiki/content/20201126102708-abstraction.md

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---
date: 2020-11-26
id: 097ba634-5976-437d-84c9-3bfe776df02b
title: abstraction
---
# Origin
Latin abstrahere "drawm from"
# Definition
Hide implementation details from the user. For exapmle by extending
classes.
# Examples
``` typescript
abstract class Fish {
swim() { return '>>>>>' }
}
class Shark extends Fish {
name: 'shark'
}
class Tuna extends Fish {
name: 'tuna'
}
```