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

cvrebert

Currently considering https://github.com/webdriverio/webdrivercss

---

Core Goals:

• Can test in up-to-date versions of all major browsers
• Can test on up-to-date versions of all major OSes
• Can test in IE9 (because Bootstrap v4 will support IE9+)
• Don't want to have to setup/maintain our own cluster of VMs running all the necessary OSes (and all the versions of Windows)
• Workflow for management of reference/baseline/norm screenshots

arikfr

# get existing queries results
users = get_query_result(132) # this one has {id, name}
events_by_users = get_query_result(131) # this one has {user_id, events count}

# actual merging. can be replaced with helper function and/or some Pandas code
events_dict = {}
for row in events_by_users['rows']:
  events_dict[row['user_id']] = row['count']

for row in users['rows']:

acdlite

/**
 * Basic proof of concept.
 * - Hot reloadable
 * - Stateless stores
 * - Stores and action creators interoperable with Redux.
 */

import React, { Component } from 'react';

export default function dispatch(store, atom, action) {

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

d2s

Installing Node.js with nvm to Linux & macOS & WSL

A quick guide on how to setup Node.js development environment.

Install nvm for managing Node.js versions

nvm allows installing several versions of Node.js to the same system. Sometimes applications require a certain versions of Node.js to work. Having the flexibility of using specific versions can help.

1. Open new Terminal window.

craigbeck

  query IntrospectionQuery {
    __schema {
      queryType { name }
      mutationType { name }
      subscriptionType { name }
      types {
        ...FullType
      }
      directives {

benley

-- conway's game of 💩
-- shittily written by benley

module Main where

import Control.Concurrent
import Data.Array.Unboxed
import System.Environment

data Cell = Live | Dead deriving Eq

leobaiano

function createRandomArray( lenght, max ) {
    return Array.apply( null, Array ( lenght ) ).map( function( _, i ) {
        return Math.round( Math.random() * max );
    });
}
console.log( createRandomArray( 20, 300 ) );

Luiz-Monad

//how to implement CRUD with F# and entityframework and TypeClasses
     
//transform this into an highorder type
type Customer with static member queryId = <@ fun ( λ : Customer ) -> λ.Id @> 

//just a helper
type entity<'T> = ('T -> int)

//our highorder context