Renzo Canepa rcanepa
| CREATE EXTENSION btree_gist; | |
| CREATE TABLE room_reservations ( | |
| room_id integer, | |
| reserved_at timestamptz, | |
| reserved_until timestamptz, | |
| canceled boolean DEFAULT false, | |
| EXCLUDE USING gist ( | |
| room_id WITH =, tstzrange(reserved_at, reserved_until) WITH && | |
| ) WHERE (not canceled) |
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
| // Promise.all is good for executing many promises at once | |
| Promise.all([ | |
| promise1, | |
| promise2 | |
| ]); | |
| // Promise.resolve is good for wrapping synchronous code | |
| Promise.resolve().then(function () { | |
| if (somethingIsNotRight()) { | |
| throw new Error("I will be rejected asynchronously!"); |
Rich Hickey • 3 years ago
Sorry, I have to disagree with the entire premise here.
A wide variety of experiences might lead to well-roundedness, but not to greatness, nor even goodness. By constantly switching from one thing to another you are always reaching above your comfort zone, yes, but doing so by resetting your skill and knowledge level to zero.
Mastery comes from a combination of at least several of the following:
| (require '[schema.core :as s]) | |
| (require '[schema.coerce :as coerce]) | |
| (require '[schema.utils :as utils]) | |
| (defn filter-schema-keys | |
| [m schema-keys extra-keys-walker] | |
| (reduce-kv (fn [m k v] | |
| (if (or (contains? schema-keys k) | |
| (and extra-keys-walker | |
| (not (utils/error? (extra-keys-walker k))))) |
These rules are adopted from the AngularJS commit conventions.
| (Chapters marked with * are already written. This gets reorganized constantly | |
| and 10 or so written chapters that I'm on the fence about aren't listed.) | |
| Programmer Epistemology | |
| * Dispersed Cost vs. Reduced Cost | |
| * Verificationist Fallacy | |
| * Mistake Metastasis | |
| The Overton Window | |
| Epicycles All The Way Down | |
| The Hyperspace Gates Were Just There |
(by @andrestaltz)
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> | |
| <html lang="es"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <title>Validador de RUT HTML5</title> | |
| </head> | |
| <body> | |
| <form> | |
| <input type="text" id="rut" name="rut" required oninput="checkRut(this)" placeholder="Ingrese RUT"> | |
| <button type="submit">Validar RUT y Enviar Form</button> |