ayozebarrera

ayozebarrera

// 🔥 Node 7.6 has async/await! Here is a quick run down on how async/await works

const axios = require('axios'); // promised based requests - like fetch()

function getCoffee() {
  return new Promise(resolve => {
    setTimeout(() => resolve('☕'), 2000); // it takes 2 seconds to make coffee
  });
}

ayozebarrera

/**
 * Create an ActionQueue and dispatch each synchronously
 * @author tgroshon
 * 
 * See an alternate implementation using ASync from
 * https://github.com/facebook/flux/issues/106
 * by fabiozaffani
 */
import {Dispatcher} from 'flux'

ayozebarrera

How to fix rm -f .git/index

Ever gotten this message?

fatal: Unable to create '/path/to/repo/.git/index.lock': File exists.

If no other git process is currently running, this probably means a git process crashed in this repository earlier. Make sure no other git process is running and remove the file manually to continue.

ayozebarrera

nest.js

A multi-level groupBy for arrays inspired by D3's nest operator.

Nesting allows elements in an array to be grouped into a hierarchical tree structure; think of it like the GROUP BY operator in SQL, except you can have multiple levels of grouping, and the resulting output is a tree rather than a flat table. The levels in the tree are specified by key functions.

See this fiddle for live demo.

ayozebarrera

// http://tile.openstreetmap.org/z/x/y.png
// example: http://tile.openstreetmap.org/12/2225/2367.png

lon2tile = (lon, zoom) => {
  return (Math.floor((lon+180)/360*Math.pow(2,zoom)));
};

lat2tile = (lat, zoom) => {
  return (Math.floor((1-Math.log(Math.tan(lat*Math.PI/180) + 1/Math.cos(lat*Math.PI/180))/Math.PI)/2 *Math.pow(2,zoom)));  
};

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[].filter.call(document.querySelectorAll('.color-group .color'), function(el) {
  return el.querySelector('.shade').textContent === 'A400';
}).map(function (el) {
  return el.querySelector('.hex').textContent;
});

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/**
 * removes duplicated objects with the specified prop
 * @param  {Array}  myArr [our collection to check]
 * @param  {String} prop  [name of the property to compare]
 * @return {Array}        [unique array]
 */
removeDuplicates = (myArr, prop) => {
  return myArr.filter((obj, pos, arr) => {
    return arr.map(mapObj => mapObj[prop]).indexOf(obj[prop]) === pos;
  });

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/**
 * Get a random floating point number between `min` and `max`.
 * 
 * @param {number} min - min number
 * @param {number} max - max number
 * @return {float} a random floating point number
 */
function getRandom(min, max) {
  return Math.random() * (max - min) + min;
}

ayozebarrera

/* @flow */

var React = require("react")
var Immutable = require("immutable")

// In order to use any type as props, including Immutable objects, we
// wrap our prop type as the sole "data" key passed as props.
type Component<P> = ReactClass<{},{ data: P },{}>
type Element = ReactElement<any, any, any>