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@evancz
evancz / Architecture.md
Last active December 21, 2022 14:28
Ideas and guidelines for architecting larger applications in Elm to be modular and extensible

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:

  1. 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
// Node.js CheatSheet.
// Download the Node.js source code or a pre-built installer for your platform, and start developing today.
// Download: http://nodejs.org/download/
// More: http://nodejs.org/api/all.html
// 0. Synopsis.
// http://nodejs.org/api/synopsis.html
# NPM CheatSheet.
# Super easy intall: npm comes with node now.
# To create your own npm package: https://www.npmjs.org/doc/misc/npm-developers.html
# More: https://www.npmjs.org/doc/
# 1. NPM Command Lines.
# Local mode is the default.
# Use --global or -g on any command to operate in global mode instead.
@dexteryy
dexteryy / gist:b09597d8ccc4f8d70241
Last active August 29, 2015 14:01
MVC with a unidirectional data flow

Flux + React:

Views ---> (actions) ----> Dispatcher ---> (registered callback) ---> Stores -------+
Ʌ                                                                                   |
|                                                                                   V
+-- (Controller-Views "change" event handlers) ---- (Stores emit "change" events) --+

NervJS + DarkDOM + Templating or Virtual-DOM (React-like):

@jeffmo
jeffmo / gist:054df782c05639da2adb
Last active January 11, 2024 06:05
ES Class Property Declarations
@trevnorris
trevnorris / perf-flame-graph-notes.md
Last active December 24, 2023 05:25
Quick steps of how to create a flame graph using perf

The prep-script.sh will setup the latest Node and install the latest perf version on your Linux box.

When you want to generate the flame graph, run the following (folder locations taken from install script):

sudo sysctl kernel.kptr_restrict=0
# May also have to do the following:
# (additional reading http://unix.stackexchange.com/questions/14227/do-i-need-root-admin-permissions-to-run-userspace-perf-tool-perf-events-ar )
sudo sysctl kernel.perf_event_paranoid=0

Virtual DOM and diffing algorithm

There was a [great article][1] about how react implements it's virtual DOM. There are some really interesting ideas in there but they are deeply buried in the implementation of the React framework.

However, it's possible to implement just the virtual DOM and diff algorithm on it's own as a set of independent modules.

@ericboehs
ericboehs / gist:7125105
Created October 23, 2013 19:30
Poltergeist hack to silence CoreText performance notes from phantomjs
module Capybara::Poltergeist
class Client
private
def redirect_stdout(to)
prev = STDOUT.dup
prev.autoclose = false
$stdout = to
STDOUT.reopen(to)
prev = STDERR.dup
@kerryrodden
kerryrodden / .block
Last active November 5, 2024 20:24
Sequences sunburst
license: apache-2.0