paf31

This blog post series has moved here.

You might also be interested in the 2016 version.

anaisbetts

// Pretend that cookies work
(function (document) {
  var cookies = {};
  document.__defineGetter__('cookie', function () {
    var output = [];
    for (var cookieName in cookies) {
      output.push(cookieName + "=" + cookies[cookieName]);
    }
    return output.join(";");
  });

bgamari

#!/bin/bash -e

name=$(sed -n -e 's/^[nN]ame:\s\+\(.\+\)/\1/p' *.cabal)
old_ver=$(sed -n -e 's/^[vV]ersion:\s\+\(.\+\)/\1/p' *.cabal)
has_docs=1
grep -i '^Library' *.cabal || has_docs=0

echo "Package name: $name"
echo "Current version: $old_ver"
echo "Has documentation: $has_docs"

Thimoteus

module Main where

import Data.Function
import Debug.Trace
import Control.Monad.Trans
import Control.Monad.Cont.Trans
import Control.Monad.Eff

foreign import data Timeout :: !
type Milliseconds = Number

toburger

module Reflection =
    open Microsoft.FSharp.Quotations
    open Microsoft.FSharp.Quotations.Patterns
    open System.Reflection

    let private (|Name|) (info: MemberInfo) = info.Name

    let private (|PropertyName|_|) = function
        | PropertyGet (_, Name name, _) -> Some name
        | _ -> None

paulirish

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics

• elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent

manigandham

Strictly Frameworks

• Mobiledoc - github.com/bustle/mobiledoc-kit - framework to build editors with a standardized JSON structure
• ShareDB - github.com/share/sharedb - framework to sync any JSON document using operational transforms, add real-time collaborative editing to anything else
• Bangle.dev - github.com/bangle-io/bangle.dev - toolkit built for building editors, based on prosemirror

Abstracted Editors

These use separate document structures instead of HTML, some are more modular libraries than full editors

axemclion

Using Chrome Traces to Automate Rendering Performance

Ten years ago, increasing the performance of a website usually meant tweaking the server side code to spit out responses faster. Web Performance engineering has come a long way since then. We have discovered patterns and practices that make the (perceived) performance of websites faster for users just by changing the way the front end code is structured, or tweaking the order of elements on a HTML page. Majority of the experiments and knowledge has been around delivering content to the user as fast as possible.

Today, web sites have grown to become complex applications that offer the same fidelity as applications installed on computers. Thus, consumers have also started to compare the user experience of native apps to the web applications. Providing a rich and fluid experience as users navigate web applications has started to play a major role in the success of the web.

Most modern browsers have excellent tools that help measure the runtime performa

mrange

// Minimalistic Parser Combinator in F#
//  Neither Performance nor Error Reporting has been considered
//  For production code you are better off using http://www.quanttec.com/fparsec/
//  Inspired by the classic: http://www.cs.nott.ac.uk/~pszgmh/monparsing.pdf
[<Measure>]
type ParserPos
type ParserResult<'T> = 'T option*int<ParserPos>
type Parser<'T>       = string*int<ParserPos> -> ParserResult<'T>

module Parser =

jdegoes

Applied Functional Programming with Scala - Notes

Copyright © 2016-2018 Fantasyland Institute of Learning. All rights reserved.

1. Mastering Functions

A function is a mapping from one set, called a domain, to another set, called the codomain. A function associates every element in the domain with exactly one element in the codomain. In Scala, both domain and codomain are types.

val square : Int => Int = x => x * x