Ricardo J. Vazquez rix501

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Powerlevel10k

Architecture in Elm

This document is a collection of concepts and strategies to make large Elm projects modular and extensible.

We will start by thinking about the structure of signals in our program. Broadly speaking, your application state should live in one big foldp. You will probably merge a bunch of input signals into a single stream of updates. This sounds a bit crazy at first, but it is in the same ballpark as Om or Facebook's Flux. There are a couple major benefits to having a centralized home for your application state:

There is a single source of truth. Traditional approaches force you to write a decent amount of custom and error prone code to synchronize state between many different stateful components. (The state of this widget needs to be synced with the application state, which needs to be synced with some other widget, etc.) By placing all of your state in one location, you eliminate an entire class of bugs in which two components get into inconsistent states. We also think yo

Should be work with 0.18

Destructuring(or pattern matching) is a way used to extract data from a data structure(tuple, list, record) that mirros the construction. Compare to other languages, Elm support much less destructuring but let's see what it got !

Tuple

myTuple = ("A", "B", "C")
myNestedTuple = ("A", "B", "C", ("X", "Y", "Z"))

Chalice Dev AWS IAM Policy

AWS IAM Policy suitable for assigning to a user developing Chalice applications. Allows the developer sucessfully execute chalice deploy, chalice delete and chalice logs

Derived from comments on chalice/issues/59, extended by trial and error :-)

Subsitute YOUR-AWS-REGION in chalice-dev-iam-policy.json with the region you are deploying to, for example eu-west-1.

AWS profiles

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First time setting up your Deck? You may enjoy my setup guide. It'll get you started on Emulation.

Improvements

Main changes at initial release versus cdleveille's original script:

Added zenity for a basic "GUI"

	#!/bin/sh

	basename=`basename $0`

	if [ -z "$*" ]; then
	echo "usage: ${basename} <dot> [ -o \| -r \| <file> \| - ]"
	echo ""
	echo "options:"
	echo " -o open dot in window with keyboard focus"
	echo " -r read contents of dot"


	// when T is any\|unknown, Y is returned, otherwise N
	type IsAnyUnknown<T, Y, N> = unknown extends T ? Y : N;

	// when T is never, Y is returned, otherwise N
	type IsNever<T, Y = true, N = false> = [T] extends [never] ? Y : N;

	// when T is a tuple, Y is returned, otherwise N
	// valid tuples = [string], [string, boolean],
	// invalid tuples = [], string[], (string \| number)[]