ohanhi

The Why and When of Choosing Elm

What is Elm?

• Language (and "framework") for building web frontend applications
• Can be used in place of HTML, CSS and JavaScript
• Compiles into the above

SIRHAMY

<div>{"<"} Less than, {">"} greater than </div>

DrBoolean

// to, from are awkward here. generateReport only needs them to send an email
const generateReport = (to, from, data) =>
	mungeData(data, (warnings, munged) =>
		renderReport(munged, (report) => emailReport(to, from, report)))

generateReport(“info@reports.com”, “app@test.net”, {some: ‘data’})


// if emailReport was curried, we could pass in the emailer

ericelliott

// instanceof is a prototype identity check.
// NOT a type check.

// That means it lies across execution contexts,
// when prototypes are dynamically reassigned,
// and when you throw confusing cases like this
// at it:

function foo() {}
const bar = { a: 'a'};

Avaq

const I  = x => x
const K  = x => y => x
const A  = f => x => f (x)
const T  = x => f => f (x)
const W  = f => x => f (x) (x)
const C  = f => y => x => f (x) (y)
const B  = f => g => x => f (g (x))
const S  = f => g => x => f (x) (g (x))
const S_ = f => g => x => f (g (x)) (x)
const S2 = f => g => h => x => f (g (x)) (h (x))

Su-Shee

Falsehoods Programmers Believe About "Women In Tech"

• We have absolutely no idea what we're doing in tech. Please explain the utmost basic things to us.

• We only do web design. Our whole reason of being in tech is to make things pretty. Consider us the doilies of the industry.

• We're not laughing about your joke, so we clearly need you explain it to us. In great detail.

• We're only in tech to find a husband, boyfriend or generally to get laid.

cjaoude

Use: for testing against email regex
ref: http://codefool.tumblr.com/post/15288874550/list-of-valid-and-invalid-email-addresses


List of Valid Email Addresses

email@example.com
firstname.lastname@example.com
email@subdomain.example.com
firstname+lastname@example.com

raine

Read heroku logs output w/ bunyan

The stuff before the JSON in heroku logs output has to be cut off for bunyan to work.

$ heroku logs | sed -l 's/.*app\[web\..*\]\: //' | bunyan

Flag -l makes the output buffered by line.

donnut

TypeScript and currying

In functional programming you often want to apply a function partly. A simple example is a function add. It would be nice if we could use add like:

var res2 = add(1, 3); // => 4

var add10To = add(10);
var res = add10To(5); // => 15

staltz

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

---

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

---