dzjack

#!/usr/bin/env bash

if [ $# -eq 0 ]
  then
    echo "Please provide path to test file."
    exit 1
fi

LOGFILE="./benchmark.log" #filename of the logfile
TESTFILE="$1"

dzjack

async/await is just the do-notation of the Promise monad

CertSimple just wrote a blog post arguing ES2017's async/await was the best thing to happen with JavaScript. I wholeheartedly agree.

In short, one of the (few?) good things about JavaScript used to be how well it handled asynchronous requests. This was mostly thanks to its Scheme-inherited implementation of functions and closures. That, though, was also one of its worst faults, because it led to the "callback hell", an seemingly unavoidable pattern that made highly asynchronous JS code almost unreadable. Many solutions attempted to solve that, but most failed. Promises almost did it, but failed too. Finally, async/await is here and, combined with Promises, it solves the problem for good. On this post, I'll explain why that is the case and trace a link between promises, async/await, the do-notation and monads.

First, let's illustrate the 3 styles by implementing

dzjack

// Copyright (c) 2017 Ismael Celis

// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:

// The above copyright notice and this permission notice shall be included in all

dzjack

# Samba 4 config example
# Connected to existing remote Samba 4 Active Directory Directory Controller
# ZFS pool @ /storage
# Network is 192.168.101.0/24
# Samba is installed with:
# pkg install samba42 
# and then joined to existing AD with:
# samba-tool domain join <params>
# After this /usr/local/etc/smb4.conf is edited and restarted with /usr/local/etc/rc.d/samba_server restart

dzjack

import React, { useRef, forwardRef, Ref, useEffect } from 'react';
import { TextInputProps, TextInput } from 'react-native';
import styled from 'styled-components/native';

interface Props extends TextInputProps {
  showEditLabel?: boolean;
}

const Input = styled.TextInput``;

dzjack

Notes on selection events in mobile browsers (April 2016)

Notes on events that are fired during text selection in current desktop and mobile browsers.

Testing steps:

1. Serve test.html from local dev server and open on device
2. Make an initial selection via long-press on the text, observing reported events
3. Modify the selection using drag handles and observe reported events

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window.__testCleanup = () => {
  const unregisterSW = () => {
    return navigator.serviceWorker.getRegistrations()
    .then((registrations) => {
      const unregisterPromise = registrations.map((registration) => {
        return registration.unregister();
      });
      return Promise.all(unregisterPromise);
    });
  };

dzjack

package main

// This is an example of a resilient service worker program written in Go.
//
// This program will run a worker, wait 5 seconds, and run it again.
// It exits when SIGINT or SIGTERM is received, while ensuring any ongoing work
// is finished before exiting.
//
// Unexpected panics are also handled: program won't crash if the worker panics.
// However, panics in goroutines started by the worker won't be handled and have

dzjack

##############################################
# Sample client-side OpenVPN 2.0 config file #
# for connecting to multi-client server.     #
#                                            #
# This configuration can be used by multiple #
# clients, however each client should have   #
# its own cert and key files.                #
#                                            #
# On Windows, you might want to rename this  #
# file so it has a .ovpn extension           #

dzjack

import * as React from "react";
import { render } from "react-dom";
import produce from "immer";
import { set, has } from "lodash";

import "./styles.css";

function enhancedReducer(state, updateArg) {
  // check if the type of update argument is a callback function
  if (updateArg.constructor === Function) {