kristopherjohnson

// F#'s "pipe-forward" |> operator
//
// Also "Optional-chaining" operators |>! and |>&
//
// And adapters for standard library map/filter/sorted

infix operator |>   { precedence 50 associativity left }
infix operator |>!  { precedence 50 associativity left }
infix operator |>&  { precedence 50 associativity left }
infix operator |>*  { precedence 50 associativity left }

sdiehl

import Control.Monad

-------------------------------------------------------------------------------
-- State Monad Implementation
-------------------------------------------------------------------------------

newtype State s a = State { runState :: s -> (a,s) }

instance Monad (State s) where
  return a = State $ \s -> (a, s)

agentgt

<?xml version="1.0" encoding="utf-8"?>
<colorTheme id="9999" name="One Dark Like" modified="2015-09-01 19:55:49" author="Adam Gent" website="http://snaphop.com">
    <searchResultIndication color="#E5C07B" />
    <filteredSearchResultIndication color="#E5C07B" />
    <occurrenceIndication color="#4B4E55" />
    <writeOccurrenceIndication color="#4B4E55" />
    <findScope color="#4B4E55" />
    <deletionIndication color="#DF5F5F" />
    <sourceHoverBackground color="#4B4E55" />
    <singleLineComment color="#969896" italic="false" />

nikhan

ffmpeg -i test.mov -vcodec libx264 -vf 'scale=640:trunc(ow/a/2)*2' -acodec aac -vb 1024k -minrate 1024k -maxrate 1024k -bufsize 1024k -ar 44100 -strict experimental -r 30 out.mp4

DamianEdwards

What happens if you tell GitHub it's JSON

{
  "hello": "world" // I want my comments!
}

Just tell GitHub it's JavaScript

{

Rich-Harris

Stuff I wish I'd known sooner about service workers

I recently had several days of extremely frustrating experiences with service workers. Here are a few things I've since learned which would have made my life much easier but which isn't particularly obvious from most of the blog posts and videos I've seen.

I'll add to this list over time – suggested additions welcome in the comments or via twitter.com/rich_harris.

Use Canary for development instead of Chrome stable

Chrome 51 has some pretty wild behaviour related to console.log in service workers. Canary doesn't, and it has a load of really good service worker related stuff in devtools.

dherman

Motivation

• expression-oriented programming one of the great advances of FP
• expressions plug together like legos, making more malleable programming experience in-the-small

Examples

Write in an expression-oriented style, scoping variables as locally as possible:

WebReflection

The history of hyperHTML followed by lit-html

While many remember the epic hyperHTML: A Virtual DOM Alternative post I've published the 5th of March 2017, the first official implementation of the library was working as hyperHTML.bind(node) function for tagged literals the day before, and it's been in my experiments folder already for a little while.

The hilarious reaction from the skeptical community

At first glance people couldn't believe performance of the DBMonster demo shown in that article,

daybrush

import JavaScriptCore

extension JSContext {
    subscript(key: String) -> Any {
        get {
            return self.objectForKeyedSubscript(key)
        }
        set{
            self.setObject(newValue, forKeyedSubscript: key as NSCopying & NSObjectProtocol)
        }

raghubetina

Delegating 404s to builder.io in Rails

Give builder.io a chance to respond to paths that you don't have a route for before serving up a 404 page:

1. In Gemfile, add gem 'rack-cors' and bundle.

2. In config/application.rb, add:

    config.middleware.insert_before 0, Rack::Cors do
      allow do