Filipe W. Lima filipewl

https://twitter.com/snookca/status/1073299331262889984?s=21

‪“‬In what way is JS any more maintainable than CSS? How does writing CSS in JS make it any more maintainable?”

‪Happy to chat about this. There’s an obvious disclaimer that there’s a cost to css-in-js solutions, but that cost is paid specifically for the benefits it brings; as such it’s useful for some usecases, and not meant as a replacement for all workflows. ‬

‪(These conversations always get heated on twitter, so please believe that I’m here to converse, not to convince. In return, I promise to listen to you too and change my opinions; I’ve had mad respect for you for years and would consider your feedback a gift. Also, some of the stuff I’m writing might seem obvious to you; I’m not trying to tell you if all people of some of the details, but it might be useful to someone else who bumps into this who doesn’t have context)‬

So the big deal about css-in-js (cij) is selectors.

Adding your own channel greeting

All you need to do is to add your own text in the greetings.yml file.

Example

CHANNEL_NAME:
  text: |
 This is a multi line message

The code here is a tech demo showing how to switch between databases in Rails 5, in a thread-safe manner.

BACKGROUND: HOW NOT TO CHANGE DATABASES

The simple way to switch databases is:

ActiveRecord::Base.establish_connection :user_shard1
puts User.find(1) # this is executed on the database keyed on "user_shard1" in database.yml
ActiveRecord::Base.establish_connection :development

When should you use DateTime and when should you use Time?

It's a common misconception that [William Shakespeare][1] and [Miguel de Cervantes][2] died on the same day in history - so much so that UNESCO named April 23 as [World Book Day because of this fact][3]. However because England hadn't yet adopted [Gregorian Calendar Reform][4] (and wouldn't until [1752][5]) their deaths are actually 10 days apart. Since Ruby's Time class implements a [proleptic Gregorian calendar][6] and has no concept of calendar reform then there's no way to express this. This is where DateTime steps in:

>> shakespeare = DateTime.iso8601('1616-04-23', Date::ENGLAND)
=> Tue, 23 Apr 1616 00:00:00 +0000
>> cervantes = DateTime.iso8601('1616-04-23', Date::ITALY)
=> Sat, 23 Apr 1616 00:00:00 +0000

Hi Nicholas,

I saw you tweet about JSX yesterday. It seemed like the discussion devolved pretty quickly but I wanted to share our experience over the last year. I understand your concerns. I've made similar remarks about JSX. When we started using it Planning Center, I led the charge to write React without it. I don't imagine I'd have much to say that you haven't considered but, if it's helpful, here's a pattern that changed my opinion:

The idea that "React is the V in MVC" is disingenuous. It's a good pitch but, for many of us, it feels like in invitation to repeat our history of coupled views. In practice, React is the V and the C. Dan Abramov describes the division as Smart and Dumb Components. At our office, we call them stateless and container components (view-controllers if we're Flux). The idea is pretty simple: components can't

Hello, visitors! If you want an updated version of this styleguide in repo form with tons of real-life examples… check out Trellisheets! https://github.com/trello/trellisheets

Trello CSS Guide

“I perfectly understand our CSS. I never have any issues with cascading rules. I never have to use !important or inline styles. Even though somebody else wrote this bit of CSS, I know exactly how it works and how to extend it. Fixes are easy! I have a hard time breaking our CSS. I know exactly where to put new CSS. We use all of our CSS and it’s pretty small overall. When I delete a template, I know the exact corresponding CSS file and I can delete it all at once. Nothing gets left behind.”

You often hear updog saying stuff like this. Who’s updog? Not much, who is up with you?

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

	<!DOCTYPE html>
	<p id="greeting"></p>
	<script type="module">

	import {Runtime, Inspector, Library} from "https://unpkg.com/@observablehq/notebook-runtime?module";
	import notebook from "https://api.observablehq.com/d/6c9b7fd62ca784c0.js";

	// Rewrite the notebook to redefine the “subject” cell in the main module.
	const override = {
	id: notebook.id,

	var KlaviyoSubscribe = KlaviyoSubscribe \|\| {};
	(function() {
	if (!KlaviyoSubscribe._loaded) {
	KlaviyoSubscribe._loaded = !0;
	var m = {
	"modal.html": '<div class="klaviyo_modal" style="display:none;"><div class="klaviyo_inner"><a href="#" class="klaviyo_close_modal klaviyo_header_close">×</a><form action="" method="POST" novalidate="novalidate" class="klaviyo_subscription_form"><input type="hidden" name="g" value="" /><p class="klaviyo_header"></p><p class="klaviyo_subheader"></p><div class="klaviyo_fieldset"></div><div class="klaviyo_fine_print"></div><div class="klaviyo_form_actions"><button type="submit" class="klaviyo_submit_button"><span></span></button></div><div class="klaviyo_below_submit"></div><div class="error_message" style="display:none;"></div></form><div class="success_message" style="display:none;"></div></div></div>',
	"flyout.html": '<div class="klaviyo_flyout" style="display:none;"><div class="klaviyo_inner"><div class="klaviyo_topbar" /><a href="#" class="klav


	# 1) Create your private key (any password will do, we remove it below)

	$ cd ~/.ssh
	$ openssl genrsa -des3 -out server.orig.key 2048


	# 2) Remove the password

	$ openssl rsa -in server.orig.key -out server.key