supermario

A summary of the Elm architectures/compilation/installation/usage matrix state of affairs.

• Terms
• Context
  • Problem aspect 1: npm/elm installer
  • Problem aspect 2: Rise in arm64 architecture usage
• Current support by architecture, install method and usage
• Suggestions
• 🧪 Unofficial binaries

supermario

The question of code-splitting in Elm comes up fairly routinely.

The apparent low-hanging-fruit of code-splitting with Elm's pure/immutable philosophy has led me to explore this a few times with my compiler work on Lamdera.

Here are some of the challenges I've found:

The impact of Elm's current live-code-inclusion (LCI?)

It's a little trickier than it looks because Elm's DCE is actually not DCE (dead code elimination) at all, it's LCI (live code inclusion).

supermario

module RandomOrg exposing (..)

import Http
import Json.Decode as D
import Prng.Uuid as Uuid
import Process
import Random.Pcg.Extended as Random
import Task exposing (Task)

supermario

somecommand: #App# Description of some command
  somebashcommand
  
someothercommand: #Development# Description of some other command
  someotherbashcommand
  
help:
	@./scripts/makefile-help.sh ./Makefile

.DEFAULT_GOAL := help

supermario

$ ping slack.com
PING slack.com (52.222.233.130): 56 data bytes
Request timeout for icmp_seq 0
Request timeout for icmp_seq 1
Request timeout for icmp_seq 2
^C
--- slack.com ping statistics ---
4 packets transmitted, 0 packets received, 100.0% packet loss

# mario ~                                                                                                                                                                10:07:23

supermario

Specification

The original specification for the 'Toy Robot' challenge.

Description

• The application is a simulation of a toy robot moving on a square tabletop, of dimensions 5 units x 5 units.
• There are no other obstructions on the table surface.
• The robot is free to roam around the surface of the table, but must be prevented from falling to destruction. Any movement that would result in the robot falling from the table must be prevented, however further valid movement commands must still be allowed.

supermario

$ pulp init
* Generating project skeleton in /Users/mario/Dropbox/dev/test/sentiment
bower purescript-console#^0.1.0 cached git://github.com/purescript/purescript-console.git#0.1.1
bower purescript-console#^0.1.0         validate 0.1.1 against git://github.com/purescript/purescript-console.git#^0.1.0
bower purescript-eff#^0.1.0               cached git://github.com/purescript/purescript-eff.git#0.1.2
bower purescript-eff#^0.1.0             validate 0.1.2 against git://github.com/purescript/purescript-eff.git#^0.1.0
bower purescript-prelude#^0.1.0           cached git://github.com/purescript/purescript-prelude.git#0.1.3
bower purescript-prelude#^0.1.0         validate 0.1.3 against git://github.com/purescript/purescript-prelude.git#^0.1.0
bower purescript-console#^0.1.0          install purescript-console#0.1.1
bower purescript-eff#^0.1.0              install purescript-eff#0.1.2

supermario

data Box   = Box { _value :: Integer }
data World = World { _box :: Maybe Box }

makeLenses ''Box
makeLenses ''World

steps :: StateT World IO ()
steps = do
  box.value %= succ

supermario

#!/bin/sh

# Install with:
# curl http://git.io/vEN3k > .git/hooks/pre-commit

# Fail if any command is non-zero
set -e

# Redirect output to stderr.
exec 1>&2

supermario

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