kotlin-functional
所属分类：编程语言基础
开发工具：kotlin
文件大小：0KB
下载次数：0
上传日期：2023-09-19 15:28:57
上 传 者：
sh-1993
说明： Kotlin编程语言的函数概念和类型，
(Functional concepts and types for Kotlin programming language,)
文件列表:
LICENSE (11357, 2023-09-22)
base/ (0, 2023-09-22)
base/build.gradle.kts (823, 2023-09-22)
base/src/ (0, 2023-09-22)
base/src/commonMain/ (0, 2023-09-22)
base/src/commonMain/kotlin/ (0, 2023-09-22)
base/src/commonMain/kotlin/com/ (0, 2023-09-22)
base/src/commonMain/kotlin/com/github/ (0, 2023-09-22)
base/src/commonMain/kotlin/com/github/fsbarata/ (0, 2023-09-22)
base/src/commonMain/kotlin/com/github/fsbarata/functional/ (0, 2023-09-22)
base/src/commonMain/kotlin/com/github/fsbarata/functional/Context.kt (258, 2023-09-22)
base/src/commonMain/kotlin/com/github/fsbarata/functional/control/ (0, 2023-09-22)
base/src/commonMain/kotlin/com/github/fsbarata/functional/control/Alternative.kt (1618, 2023-09-22)
base/src/commonMain/kotlin/com/github/fsbarata/functional/control/Applicative.kt (1580, 2023-09-22)
base/src/commonMain/kotlin/com/github/fsbarata/functional/control/Arrow.kt (1145, 2023-09-22)
base/src/commonMain/kotlin/com/github/fsbarata/functional/control/ArrowApply.kt (255, 2023-09-22)
base/src/commonMain/kotlin/com/github/fsbarata/functional/control/ArrowChoice.kt (873, 2023-09-22)
base/src/commonMain/kotlin/com/github/fsbarata/functional/control/Category.kt (372, 2023-09-22)
base/src/commonMain/kotlin/com/github/fsbarata/functional/control/Comonad.kt (435, 2023-09-22)
base/src/commonMain/kotlin/com/github/fsbarata/functional/control/Lift.kt (1746, 2023-09-22)
base/src/commonMain/kotlin/com/github/fsbarata/functional/control/Monad.kt (1571, 2023-09-22)
base/src/commonMain/kotlin/com/github/fsbarata/functional/control/MonadPlus.kt (2767, 2023-09-22)
base/src/commonMain/kotlin/com/github/fsbarata/functional/control/MonadZip.kt (1650, 2023-09-22)
base/src/commonMain/kotlin/com/github/fsbarata/functional/control/arrow/ (0, 2023-09-22)
base/src/commonMain/kotlin/com/github/fsbarata/functional/control/arrow/FArrow.kt (4085, 2023-09-22)
base/src/commonMain/kotlin/com/github/fsbarata/functional/control/arrow/Kleisli.kt (4525, 2023-09-22)
base/src/commonMain/kotlin/com/github/fsbarata/functional/control/monad/ (0, 2023-09-22)
base/src/commonMain/kotlin/com/github/fsbarata/functional/control/monad/MonadTrans.kt (413, 2023-09-22)
base/src/commonMain/kotlin/com/github/fsbarata/functional/control/monad/OptionalT.kt (4447, 2023-09-22)
base/src/commonMain/kotlin/com/github/fsbarata/functional/control/reader/ (0, 2023-09-22)
base/src/commonMain/kotlin/com/github/fsbarata/functional/control/reader/Reader.kt (1621, 2023-09-22)
base/src/commonMain/kotlin/com/github/fsbarata/functional/control/state/ (0, 2023-09-22)
base/src/commonMain/kotlin/com/github/fsbarata/functional/control/state/State.kt (2283, 2023-09-22)
base/src/commonMain/kotlin/com/github/fsbarata/functional/data/ (0, 2023-09-22)
base/src/commonMain/kotlin/com/github/fsbarata/functional/data/BiFunctor.kt (377, 2023-09-22)
base/src/commonMain/kotlin/com/github/fsbarata/functional/data/Contravariant.kt (217, 2023-09-22)
base/src/commonMain/kotlin/com/github/fsbarata/functional/data/Foldable.kt (3684, 2023-09-22)
base/src/commonMain/kotlin/com/github/fsbarata/functional/data/Functions.kt (16661, 2023-09-22)
... ...
# kotlin-functional
[](https://jitpack.io/#fsbarata/kotlin-functional)
## Purpose
This library provides a set of concepts and implementations of patterns commonly used in functional programming.
## Background
With the increasing of the multi-threaded/core capabilities on the devices,
it is not feasible to continue using stateful, assumption-based and side-effect styles of programming.
Kotlin provides a very limited range of functional structures and patterns.
## What to use it for
This library is an attempt to complement the existing features of kotlin,
as well as providing new types that are useful in functional programming.
## Common Data Types
### Optional
Encapsulates a value that may or may not be present.
It abstracts the nullability of a value.
Most commonly used with the RxJava framework, where nulls are forbidden.
Example 1:
```
Observable.just(1, 2, 3, 5, 6, 7)
.map { if (it % 2 == 0) Optional.empty() else Optional.just(it) }
.filterNotNone() // returns an Observable with items [1, 3, 5, 7]
```
Example 2:
```
Observable.just(1, 2, 3, 5, 6, 7)
.map { if (it % 2 == 0) Optional.empty() else Optional.just(it) }
.mapNotNone(liftOpt { it + 1 }) // returns an Observable with items [2, 4, 6, 8]
```
### Either
A data structure that can only carry one of two possibilities.
Most commonly used to represent Correct (Right) or Error (Left) result of one computation.
### NonEmpty List/Set
A list/set that must have at least one element.
As a result, multiple operations are guaranteed to yield more predictable results,
such as `first`, `last`, `max`, `reduce`, etc.
Most commonly used to represent Lists that have been tested for emptiness.
### Validation
Akin to Either, Validation can only carry a Success or a Failure result.
While Either is used to shortcut errors, Validation is used to accumulate them.
Most commonly used to accumulate/compose errors from multiple computations.
## Other uses
You will find in this library other concepts such as Monad, Monoid and Foldable.
## Dependency
### Gradle
```
repositories {
maven { url 'https://jitpack.io' }
}
dependencies {
implementation "com.github.fsbarata.kotlin-functional:base:$kfVersion"
}
```
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