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@albertorestifo
albertorestifo / propdiff.js
Created April 12, 2017 15:55
Logs the diff between current and previous props on a react element
componentDidUpdate(prevProps) {
console.log('Rrow update diff:');
const now = Object.entries(this.props);
const added = now.filter(([key, val]) => {
if (prevProps[key] === undefined) return true;
if (prevProps[key] !== val) {
console.log(`${key}
- ${JSON.stringify(val)}

FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.


Effective Engineer - Notes

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@chantastic
chantastic / on-jsx.markdown
Last active March 20, 2024 01:03
JSX, a year in

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

@ches
ches / EventService.scala
Last active December 15, 2016 08:09
spray implicit allowing spray DateTimes to be deserialized from parameters directives
import spray.http.DateTime
import spray.httpx.unmarshalling._
/*
* Implicit allowing spray DateTimes to be deserialized from parameters directives.
*
* See: http://spray.io/documentation/1.2.2/spray-httpx/unmarshalling/
*/
// type FromStringOptionDeserializer[T] = Deserializer[Option[String], T]
@viktorklang
viktorklang / minscalaactors.scala
Last active March 25, 2024 19:01
Minimalist Scala Actors
/*
Copyright 2012-2021 Viktor Klang
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
@davetron5000
davetron5000 / Checkstyle pre-commit hook
Created December 18, 2008 02:40
Pre Commit Hook for running checkstyle on changed files
#!/usr/bin/perl
#
# Pre-commit hook for running checkstyle on changed Java sources
#
# To use this you need:
# 1. checkstyle's jar file somewhere
# 2. a checkstyle XML check file somewhere
# 3. To configure git:
# * git config --add checkstyle.jar <location of jar>
# * git config --add checkstyle.checkfile <location of checkfile>