yelouafi

Algebraic Effects in JavaScript part 1 - continuations and control transfer

This is the first post of a series about Algebraic Effects and Handlers.

There are 2 ways to approach this topic:

• Denotational: explain Algebraic Effects in terms of their meaning in mathematics/Category theory
• Operational: explain the mechanic of Algebraic Effects by showing how they operate under a chosen runtime environment

Both approaches are valuables and give different insights on the topic. However, not everyone (including me), has the prerequisites to grasp the concepts of Category theory and Abstract Algebra. On the other hand, the operational approach is accessible to a much wider audience of programmers even if it doesn't provide the full picture.

zpao

// This will generate 31329 <rect>s for a level 40 QR Code (177x177).
// This approach is totally fine in <canvas> (but should learn from Smarter impl below)
// Lorem Ipsum test content was ~2MB
class QRCodeSVG extends React.Component<Props> {
  render() {
    var {value, size, level, bgColor, fgColor} = this.props;

    var qrcode = new QRCodeImpl(-1, ErrorCorrectLevel[level]);
    qrcode.addData(value);
    qrcode.make();

developit

tracked

@tracked is a decorator for Preact that makes working with state values no different than properties on your component instance.

It's one 300 byte function that creates a getter/setter alias into state/setState() for a given key, with an optional initial value. The "magic" here is simply that it works as a property decorator rather than a function, so it appears to integrate directly into the language.

tracked has no dependencies and works with any component implementation that uses this.state and this.setState().

Installation

logrusorgru

-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
--                                                                            --
--                                  mysql                                     --
--                                                                            --
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

--
-- mysql <http://sqlfiddle.com/#!9/91afb5/2>
--        note: sqlfiddle is very stupid

thbkrkr

/bikeshed		# changes the color background for everyone
/shydino		# a little shy dino shows up
/pitchforks		# angry mob running across the chat
/ponies			# a pony running across the chat
/ponystream		# ponies running across the chat (only local)

konami cheat	        # changes your local background

yay!!
happy birthday

LeCoupa

/* *******************************************************************************************
 * THE UPDATED VERSION IS AVAILABLE AT
 * https://github.com/LeCoupa/awesome-cheatsheets
 * ******************************************************************************************* */


// 0. Synopsis.
// http://nodejs.org/api/synopsis.html

sebmarkbage

This proposal has moved to https://github.com/sebmarkbage/ecmascript-rest-spread

tdd

Par exemple pour être à l'aise avant un JS Total ou un Node.js.

On parle ici du langage pur dans ses versions « traditionnelles » (ES3/ES5).

• Le cours JavaScript de Codecademy (hors "Objects I/II") : http://www.codecademy.com/fr/tracks/javascript

• Le guide JavaScript du MDN : https://developer.mozilla.org/fr/docs/JavaScript/Guide

tdd

Website

Things your website should clearly state / make accessible:

• The core focus of your conf
• Your core values
• The (precise) location
• The dates
• Your programme, complete with speakers and their bios/pics

agnoster

agnoster.zsh-theme

A ZSH theme optimized for people who use:

• Solarized
• Git
• Unicode-compatible fonts and terminals (I use iTerm2 + Menlo)

For Mac users, I highly recommend iTerm 2 + Solarized Dark