https://github.com/sigma-andex/scala-fast-vect

Fast 🐆, type-safe vectors for Scala
https://github.com/sigma-andex/scala-fast-vect

dependent-types scala vect

Last synced: about 2 months ago
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Fast 🐆, type-safe vectors for Scala

• Host: GitHub
• URL: https://github.com/sigma-andex/scala-fast-vect
• Owner: sigma-andex
• Created: 2022-12-19T16:39:15.000Z (about 2 years ago)
• Default Branch: main
• Last Pushed: 2023-01-03T21:12:30.000Z (about 2 years ago)
• Last Synced: 2024-10-27T16:13:10.009Z (3 months ago)
• Topics: dependent-types, scala, vect
• Language: Scala
• Homepage:
• Size: 12.7 KB
• Stars: 3
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# scala-fast-vect 🐆

Fast, type-safe vector libary for Scala. This library is a port of my Purescript library [`purescript-fast-vect`](https://github.com/sigma-andex/purescript-fast-vect) and both libs are heavily inspired by [Idris](https://www.idris-lang.org/). A vector is list with its size encoded in the type.

## Usage

```scala

import fastvect.*

import fastvect.list.{given, *}

val zero: Vect[0, String] = Vect.empty[String]

val one: Vect[1, String] = Vect.singleton("a")

val h: String = one.head

val as: Vect[100, String] = Vect.replicate[100, String]("a")

val bs: Vect[200, String] = Vect.replicate[200, String]("b")

val cs: Vect[300, String] = as ++ bs

val ds = cs.drop[99]

val es: String = as.index[99]

val l1: String = Vect.singleton("a").last

val fives: Option[Vect[5, String]] =

  Vect.from[5, String](List("a", "b", "c", "d"))

val xs: Vect[3, String] = (Vect.replicate("a"): Vect[2, String]) :+ "b"

val ys: Vect[4, String] = "c" +: xs

val zs = Vect.from[5, Int](List(1,2,3,4))

```