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# List Ops

Implement basic list operations.

In functional languages list operations like `length`, `map`, and
`reduce` are very common. Implement a series of basic list operations,
without using existing functions.

## Hints

The tests for this exercise require you to use extensions, a mechanism for adding new functionality to an existing class whose source you do not directly control without having to subclass it. To learn more about Kotlin's implementations of extensions, check out the [official documentation](https://kotlinlang.org/docs/reference/extensions.html#extensions).

The `customFoldLeft` and `customFoldRight` methods are "fold" functions, which is a concept well-known in the functional programming world, but less so in the object-oriented one. If you'd like more background information, check out this [fold](https://en.wikipedia.org/wiki/Fold_(higher-order_function)) page.





## Submitting Incomplete Solutions
It's possible to submit an incomplete solution so you can see how others have completed the exercise.

Version data entries

165 entries across 165 versions & 1 rubygems

Version Path
trackler-2.2.1.119 tracks/kotlin/exercises/list-ops/README.md
trackler-2.2.1.118 tracks/kotlin/exercises/list-ops/README.md
trackler-2.2.1.117 tracks/kotlin/exercises/list-ops/README.md
trackler-2.2.1.116 tracks/kotlin/exercises/list-ops/README.md
trackler-2.2.1.115 tracks/kotlin/exercises/list-ops/README.md
trackler-2.2.1.114 tracks/kotlin/exercises/list-ops/README.md
trackler-2.2.1.113 tracks/kotlin/exercises/list-ops/README.md
trackler-2.2.1.111 tracks/kotlin/exercises/list-ops/README.md
trackler-2.2.1.110 tracks/kotlin/exercises/list-ops/README.md
trackler-2.2.1.109 tracks/kotlin/exercises/list-ops/README.md
trackler-2.2.1.108 tracks/kotlin/exercises/list-ops/README.md
trackler-2.2.1.107 tracks/kotlin/exercises/list-ops/README.md
trackler-2.2.1.106 tracks/kotlin/exercises/list-ops/README.md
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trackler-2.2.1.103 tracks/kotlin/exercises/list-ops/README.md
trackler-2.2.1.102 tracks/kotlin/exercises/list-ops/README.md
trackler-2.2.1.101 tracks/kotlin/exercises/list-ops/README.md
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trackler-2.2.1.99 tracks/kotlin/exercises/list-ops/README.md