evancz

Elm 0.15.1 vs 0.16 on Chrome

Result of running these benchmarks on Chrome 45.0.2454.101

These numbers seem to be pretty consistent on Blink-based browsers (Chrome and Opera) but are more like 20% to 50% improvements on FireFox, Safari, and IE. I am not sure how to explain that, so take these numbers more as an indicator of “Elm is generating faster code across the board” as opposed to “Elm is 10x faster!”

business logic from examples

check boxes

evancz

module Workflow where

import List
import Maybe as M
import Either as E

type Workflow container =
  { return : forall a. a -> container a
  , bind : forall a. container a -> (a -> container b) -> container b
  }

evancz

import Graphics.Input as Input
import String

main = lift2 scene textBox name

(textBox, name) = Input.field "What is your name?"

scene textBox name = [markdown|

{{ textBox }}

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data Expr
    = Literal Int
    | Lambda String Expr
    | Apply Expr Expr
    | Var String
    | Sum Expr Expr
    deriving Show

eval :: Expr -> Expr
eval expr =

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module IntSet (empty,singleton,insert) where
 
data IntSet = Empty | Node Int IntSet IntSet
 
empty : IntSet
empty = Empty
 
singleton : Int -> IntSet
singleton x = Node x Empty Empty
 

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module Mario where

import Keyboard
import Mouse
import Window

-- MODEL
mario = { x=0, y=0, vx=0, vy=0, dir="right" }

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module History where

type History state value =
  { state | undo   : History s a -> Maybe (History s a)
          , redo   : History s a -> Maybe (History s a)
          , add    : a -> History s a -> History s a
          , value  : History s a -> Maybe a
          }

type Infinite a = { past : [a], future : [a] }

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import Window
import Color

floatify : (Int,Int) -> (Float,Float)
floatify (x,y) =
  (toFloat x, toFloat y)

scene (w,h) =
  flow down
    [ container (floor w) (floor (h / 2)) middle (asText "blue")

evancz

Elm Hackathon 1

Theme: exploring and using elm-html

I want us to make some cool stuff together. First, I think it will be fun, but I think we may begin to learn interesting ways to improve and extend elm-html so that we can all be more productive.

evancz

Command Line Refresh for Elm

With the upcoming improvements to elm-server and elm-get, it is becoming clear that the names of the various command line tools do not actually match what they do. This is a proposal of how to sort this out.

Proposal

I propose that the typical workflow will include the following tools:

• elm-repl - exactly the same as before
• elm-reactor - combination of elm-server and the debugger