I ran into a situation the other day where UUID was needed. Sadly, the UUID module in pursuit depends on an npm package. So, I rolled my own.

I’d be happy to hear of any holes in my implementation and any other critiques anyone has to offer.

Here’s the code:

 undefined

    
module UUID where

import Prelude
import Data.Either (Either(..))
import Data.Int.Bits ((.|.))
import Data.Maybe (Maybe(..))
import Data.String (joinWith, length)
import Data.String.Regex (regex, test)
import Data.String.Regex.Flags (noFlags)
import Effect (Effect)
import Data.Int (floor, hexadecimal, toNumber, toStringAs)
import Effect.Random (random)
import Data.Array (replicate)

newtype UUID = UUID String

instance showUUID :: Show UUID where
  show (UUID uuid) = uuid
derive instance eqUUID :: Eq UUID
derive instance ordUUID :: Ord UUID

randomInt :: Int -> Int -> Effect Int
randomInt min max = do
  r <- random
  pure $ floor $ r * toNumber (max - min + 1) + toNumber min

padStart :: Int -> String -> String
padStart ta
  

#fp #functionalprogramming #purescript #scala

This presentation was recorded at YOW! 2016. #GOTOcon #YOW https://yowcon.com/

Rob Howard - Software Engineer at Ambiata ‪@damncabbage‬

RESOURCES https://x.com/damncabbage https://chaos.social/@buzzyrobin https://github.com/damncabbage / buzzyrobin
https://rhoward.id.au/

Links http://robhoward.id.au/talks/2016/04/... https://github.com/damncabbage/ylj16-... https://github.com/damncabbage/puresc... https://www.purescript.org/

ABSTRACT This talk and workshop/jam will introduce you to PureScript, a strongly-typed, Haskell-inspired programming language that compiles to JavaScript. These sessions will focus on building a small game in incremental steps, from simple functions to a web-based app, giving you a chance to try out features and libraries along the way. You should leave the session with a grasp of PureScript fundamentals, and a self-sufficiency to tackle your own projects and experiments.

RECOMMENDED BOOKS Phil Freeman • PureS

cross-posted from: https://lemmy.world/post/20776659

A quick, naive AI generated Purescript translation (quickly generated that probably doesn’t work but will help get me started later)

 undefined

    

module Main where

import Prelude
import Effect (Effect)
import Effect.Aff (launchAff_)
import Effect.Aff.Timer (setInterval)
import Effect.DOM (window)
import Web.HTML (document)
import Web.HTML.Document (getElementById)
import Web.HTML.Element (Element, toElement)
import Web.HTML.HTMLCanvasElement (getContext2D, getCanvasElementById)
import Web.HTML.Canvas.Image (newImage, getWidth, getHeight, setSrc)
import Web.HTML.Canvas.CanvasRenderingContext2D (CanvasRenderingContext2D, drawImage)
import Web.HTML.Types (CanvasElement, Image)
import Web.DOM.Node.Types (Node)

foreign import requestAnimationFrame :: (Effect Unit -> Effect Unit) -> Effect Unit

-- Loads the image and begins the animation
startAnimation :: Effect Unit
startAnimation = do
  img <- newImage
  setSrc img "example1.jpg"
  canvas <
  

This video demonstrates a quick way to have something nice running with purescript (react + tailwind css + shadcn/ui components)

Repository: https://github.com/Zelenya/purescript-shadcn-tailwind-copypaste

Check out my course "How to think like a functio programmer": https://impurepics.thi/.

#fp #functionalprogramming #purescript

I've seen a bit of chatter recently in the PS community about dependent types. Many of us that have been using PureScript for years love it because of its simplicity and elegance, and there has been resistance in the community to build out the complexity, both syntax-wise and implementation-wise, of a full-blown dependently-typed language à la Idris and Agda.

But another reason that there's not much community momentum behind adding dependent types to PureScript is because PureScript already has dependent types 😁

For whatever reason, I decided at 27:00 Friday that I should make a program that would get audio from videos of a Youtube channel. This article will go over the details on why and how I made this with Purescript (and some FFI).