xpepper

How to cleanly uninstall older versions of JDK on a OSX machine

Say you want to remove the JDK 1.8.0_161:

Check that's installed with ls -1 /Library/Java/JavaVirtualMachines

for example:

$ ls -1 /Library/Java/JavaVirtualMachines
jdk1.7.0_80.jdk

xpepper

require 'rubygems'
require 'mechanize'

STARTING_URL = "http://scrum-master-toolbox.org/2015/06/podcast/ben-linders-on-retrospectives-as-a-systems-thinking-tool/"

def go_to_next_url(url, agent)
  page = agent.get(url)
  page.links_with(css: '.nav-next a').each do |f|
    puts f.href
    go_to_next_url(f.href, agent)

xpepper

Mac OS X

Mensch coding font

Apps

• Webkit
• Chrome
• Firefox
• Opera

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Massive file upload using JQueryUpload + Nginx + Rails + Sidekiq

The goal: Upload several files (virtually big files) to a Rails application without compromising the user experience.

Architecture

jQuery File Upload + Nginx + Rails (Carrierwave) + Sidekiq

1. jQuery File Upload (http://blueimp.github.io/jQuery-File-Upload/)

xpepper

defaults write com.apple.dock appswitcher-all-displays -bool true && killall Dock

xpepper

My notes on the video series "London vs Chicago TDD styles" by Uncle Bob And Sandro Mancuso

The git repo of the kata is here: https://github.com/sandromancuso/cleancoders_openchat/

The "starting-point" branch is where both implementations began: https://github.com/sandromancuso/cleancoders_openchat/tree/starting-point

• The 🇬🇧 "openchat-outside-in" branch captures the tomato by tomato history of the London approach.
• The 🇺🇸 "openchat-unclebob" branch captures the tomato by tomato history of the Chicago approach.

What I like about Sandro's style 👍

xpepper

import com.casavo.gluglu.core.infrastructure.http.installLoggingConfiguration
import com.casavo.gluglu.core.infrastructure.http.installUserAgentConfiguration
import io.ktor.client.HttpClient
import io.ktor.client.request.get
import io.ktor.client.request.url
import io.ktor.http.isSuccess
import kotlinx.coroutines.runBlocking

val client = HttpClient {
    expectSuccess = true

xpepper

markmap
colorFreezeLevel color maxWidth initialExpandLevel 2 #2980b9 300 1

The Ultimate Guide to Developer Counter-Productivity

xpepper

(from SOLID Principles with Uncle Bob - Robert C. Martin - http://www.hanselminutes.com/145/solid-principles-with-uncle-bob-robert-c-martin)

Single Responsibility Principle, what does it mean? It means that a software module should have one reason to change, then that's what I call a responsibility, a reason to change.

So for example, take a payroll application, if there's an employee class in that payroll application, you could imagine that it might have methods for calculate pay or perhaps another method for print a report, perhaps another method in the employee object for save me to the database, and what's unfortunate about these three methods existing in the same class is that they have all three completely different reasons to change. The payroll, the calculate pay will change if the accountants decides on a new way of calculating pay. The report generator will change if the people who consume the reports want the format of the reports to change. The save function will change if the DBA's decid

xpepper

(https://www.quora.com/Whats-the-difference-between-a-Junior-Intermediate-Senior-developer)

What's the difference between a Junior / Intermediate / Senior developer?

Junior is capable but needs someone with more experience to teach, mentor, guide, or direct them. They are still learning, on the job, and you should expects the risks associated with such a person.

Intermediate can work on their own but isn't ready to lead, manage, mentor, or teach. These are the core of any team. They are proficient in their respective language and are probably learning others.

Senior devs are those beyond the bounds of a skillset. They may be leaders, teachers, or mentors in your organization. They can direct the priorities, roadmap, and business related to the development of your product. They are likely proficient in more than one technology, not necessarily other programming languages; perhaps they are familiar with database architecture, search algorithms and science, hardware and scalability, et