leodutra

func waitToDisappear(_ element: XCUIElement, timeout: TimeInterval) -> Bool {
    let startTime = Date().timeIntervalSinceReferenceDate
    let remainingTime = { () -> Double in 
        let diff = timeout - (Date().timeIntervalSinceReferenceDate - startTime)
        return diff > 0 ? diff : 0
    }
    repeat {
        if !element.exists || !element.isHittable {
            return true
        }

leodutra

    static func waitForHittable(_ element: XCUIElement, timeout: TimeInterval) -> Bool {
        let startTime = Date().timeIntervalSinceReferenceDate
        let remainingTime = { () -> Double in 
            let diff = timeout - (Date().timeIntervalSinceReferenceDate - startTime)
            return diff > 0 ? diff : 0
        }
        if element.waitForExistence(timeout: remainingTime()) {
            repeat {
                if element.isHittable {
                    return true

leodutra

const sumReducer = (sum, x) => sum + x;

const minReducer = (min/* =null */, x) => {
  if (min == null) return x;
  return min < x ? min : x;
};
const maxReducer = (max/* =null */, x) => {
  if (max == null) return x;
  return max > x ? max : x;
};

leodutra

How to think about Monads

Initially, Monads are the biggest, scariest thing about Functional Programming and especially Haskell. I've used monads for quite some time now, but I didn't have a very good model for what they really are. I read Philip Wadler's paper Monads for functional programming and I still didnt quite see the pattern.

It wasn't until I read the blog post You Could Have Invented Monads! (And Maybe You Already Have.) that I started to see things more clearly.

This is a distillation of those works and most likely an oversimplification in an attempt to make things easier to understand. Nuance can come later. What we need when first learning something is a simple, if inaccurate, model.

This document assumes a beginner's knowledge of pure functional programming and Haskell with some brief encounters of Monads, e.g. [Functors, Applicatives, And

leodutra

zmq = require("zmq")
fs = require("fs")

var config = JSON.parse(fs.readFileSync(process.argv[2]))

var connexion = "tcp://"+config.ip+":"
var shell_conn = connexion+config.shell_port
var pub_conn = connexion+config.iopub_port
var hb_conn = connexion+config.hb_port

leodutra

// WARNING!
// Water Intoxication.
// This is rare but it can happen. 
// What happens is that when too much water enters the cells, the tissues swell. 
// This causes an electrolyte and salt imbalance which can cause irregular heart 
// beat and allow fluid to enter the lungs. 
// The pressure due to swelling will also put pressure on the brain and nerves,
// which can also cause problems.
// Swelling in the brain can cause coma, seizures, and even death.

leodutra

'use strict';

// TODO implement .splice()
// TODO implement .reduce()
// TODO implement .indexOf()
// TODO implement .lastIndexOf()
// TODO implement ECMA5+ <Array> functions

leodutra

# If you come from bash you might have to change your $PATH.
# export PATH=$HOME/bin:/usr/local/bin:$PATH

# Path to your oh-my-zsh installation.
export ZSH="/home/home/.oh-my-zsh"

# Set name of the theme to load --- if set to "random", it will
# load a random theme each time oh-my-zsh is loaded, in which case,
# to know which specific one was loaded, run: echo $RANDOM_THEME
# See https://github.com/ohmyzsh/ohmyzsh/wiki/Themes

leodutra

Setup Ubuntu Linux Dev Environment

Terminator, ZSH (+ .zshrc) + Oh My Zsh + Powerlevel9k + plugins, Rust, FNM + VSCode (+ext) and Nerd Font

To setup Linux for WSL2, see this gist

Requirements

leodutra

Setup Windows Subsystem 2 for Linux

Windows Subsystem 2 for Linux, Hyper, ZSH + Oh My Zsh + Powerlevel9k + plugins, FNM + VSCode (+ext) and Nerd Font

To setup native Linux, see this gist

Requirements