29 lines
1.3 KiB
Markdown
29 lines
1.3 KiB
Markdown
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---
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layout: pattern
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title: Collection Pipeline
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folder: collection-pipeline
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permalink: /patterns/collection-pipeline/
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categories: Functional
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tags:
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- Java
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- Difficulty-Beginner
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- Functional
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---
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## Intent
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Collection Pipeline introduces Function Composition and Collection Pipeline, two functional-style patterns that you can combine to iterate collections in your code.
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In functional programming, it's common to sequence complex operations through a series of smaller modular functions or operations. The series is called a composition of functions, or a function composition. When a collection of data flows through a function composition, it becomes a collection pipeline. Function Composition and Collection Pipeline are two design patterns frequently used in functional-style programming.
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## Applicability
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Use the Collection Pipeline pattern when
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* When you want to perform a sequence of operations where one operation's collected output is fed into the next
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* When you use a lot of statements in your code
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* When you use a lot of loops in your code
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## Credits
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* [Function composition and the Collection Pipeline pattern](https://www.ibm.com/developerworks/library/j-java8idioms2/index.html)
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* [Martin Fowler](https://martinfowler.com/articles/collection-pipeline/)
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