rauschma

// Demo: converting a thenable to a Promise

const fulfilledThenable = {
    then(reaction) {
        reaction('hello');
    }
};
const promise = Promise.resolve(fulfilledThenable);
console.log(promise instanceof Promise); // true
promise.then(x => console.log(x)); // hello

dbrack

objects that implement map are functors. So, Array is a functor, and Array.filter is a higher order function

abstract

a functor is an object which acts as a container for a value, which then allows you to APPLY one or more functions to that value, and returns a new functor (in case of .map(), an Array) containing the transformed value.

See also here

baumandm

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime and ffmpeg.

Forked from https://gist.github.com/dergachev/4627207. Updated to use a palette to improve quality and skip gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

tejacques

import * as React from 'react';
import { Component } from 'react';

export default function HOCBaseRender<Props, State,  ComponentState>(
    Comp: new() => Component<Props & State, ComponentState>) {
    return class HOCBase extends Component<Props, State> {
        render() {
            return <Comp {...this.props} {...this.state}/>;
        }
    }

jphaas

#To install:
#
#In your git configuration (for instance, .git/config to do it at the project level), add:
#
#[merge "json_merge"]
#	name = A custom merge driver for json files
#	driver = coffee json_merge.coffee %O %A %B
#	recursive = binary
#
#In your project's .gitattributes file, add something like: