Jamie Mason JamieMason

Effect-First Development

This document defines the working model behind Effect-first code in this repository.

Definition

Effect-first development means domain code is written in Effect-native constructs first, and native JavaScript/TypeScript patterns only at explicit boundaries.

The goal is to make failure, absence, decoding, and dependency wiring explicit and typed.

Primary References

Why

Although @setup/node as a built-in cache option, it lacks an opportunity regarding cache persistence. Depending on usage, the action below might give you faster installs and potentially reduce carbon emissions (♻️🌳❤️).

Requirements

Yarn 3+/4+ with nodeLinker: node-modules. (Not using yarn ? see the corresponding pnpm 7/8+ action gist)

Structure

Group array of JavaScript objects by keys

This fork of JamieMason's implementation changes the key parameter to be an array of keys instead of just a single key. This makes it possible to group by multiple properties instead of just one.

Implementation

const groupBy = keys => array =>
  array.reduce((objectsByKeyValue, obj) => {
    const value = keys.map(key => obj[key]).join('-');

This proposal is not longer active. Context: https://twitter.com/siddharthkp/status/909818777314902016

	const BASE83_ALPHABET = `0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz#$%*+,-.:;=?@[]^_{\|}~`;
	const BASE64_ALPHABET = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
	const BMP_HEADER = `data:image/bmp;base64,Qk3mAQAAAAAAADYAAAAoAAAADAAAAPT///8BABgAAAAAALABAAAAAAAAAAAAAAAAAAAAAAAA`;

	const sRGBToLinear = (value: number) => {
	const v = value / 255;
	if (v <= 0.04045) {
	return v / 12.92;
	} else {
	return Math.pow((v + 0.055) / 1.055, 2.4);

	import React from "react";
	import { createUserSessionService } from "services/UserSessionService";
	import { createNavService } from "services/NavService";

	// Wiring up our "IOC container"

	const userSessionService = createUserSessionService();

	// NavService depends on UserSessionService
	const navService = createNavService(userSessionService);

	use std::str;

	fn main() {
	// -- FROM: vec of chars --
	let src1: Vec<char> = vec!['j','{','"','i','m','m','y','"','}'];
	// to String
	let string1: String = src1.iter().collect::<String>();
	// to str
	let str1: &str = &src1.iter().collect::<String>();
	// to vec of byte

	<html>
	<head>
	<meta name="mobile-web-app-capable" content="yes" />
	<meta name="apple-touch-fullscreen" content="yes" />
	<meta name="apple-mobile-web-app-title" content="Expo" />
	<meta name="apple-mobile-web-app-capable" content="yes" />
	<meta name="apple-mobile-web-app-status-bar-style" content="default" />
	<link
	rel="apple-touch-icon"
	sizes="180x180"

	{
	"name": "x",
	"version": "1.0.0",
	"lockfileVersion": 1,
	"requires": true,
	"dependencies": {
	"whatwg-fetch": {
	"version": "2.0.3",
	"resolved": "file:whatwg-fetch-2.0.3.tar",
	"integrity": "sha512-RFZv5NwmYdZP+xIWp6SZkF0kiBe6oG05+mlWRZNi+lTMM99NByWEtXoTjR8SLNS3FVJ0iy0Y3h44skNHlVvY4w=="

	import React from 'react'

	// Comp:: a -> JSX;
	const Comp = g => ({
	fold: g,
	contramap: f => Comp(x => g(f(x))),
	concat: other => Comp((x) => <div> {g(x)} {other.fold(x)} </div>)
	});

	// Reducer :: (a, b) -> a