bvaughn

This API was removed in React 17

---

Interaction tracing with React

React recently introduced an experimental profiler API. After discussing this API with several teams at Facebook, one common piece of feedback was that the performance information would be more useful if it could be associated with the events that caused the application to render (e.g. button click, XHR response). Tracing these events (or "interactions") would enable more powerful tooling to be built around the timing information, capable of answering questions like "What caused this really slow commit?" or "How long does it typically take for this interaction to update the DOM?".

With version 16.4.3, React added experimental support for this tracing by way of a new NPM package, scheduler. However the public API for this package is not yet finalized and will likely change with upcoming minor releases, so it should be used with caution.

dwickwire

$(document).ready(function() {
/*
  https://github.com/brianreavis/selectize.js/issues/470
  Selectize doesn't display anything to let the user know there are no results.
  This plugin allows us to render a no results message when there are no
  results are found to select for.
*/

Selectize.define( 'no_results', function( options ) {
  var self = this;

chriskrycho

import ComputedProperty from '@ember/object/computed';
import RSVP from 'rsvp';

export enum TaskInstanceState {
  Dropped = 'dropped',
  Canceled = 'canceled',
  Finished = 'finished',
  Running = 'running',
  Waiting = 'waiting',
}

joshbuchea

Semantic Commit Messages

See how a minor change to your commit message style can make you a better programmer.

Format: <type>(<scope>): <subject>

<scope> is optional

Example

ryancatalani

// Requires:
// Leaflet: http://leafletjs.com/
// Leaflet.curve: https://github.com/elfalem/Leaflet.curve
// 
// Assumes:
// var map is a Leaflet map and already set up.

var latlngs = [];

var latlng1 = [LATITUDE, LONGTITUDE],

mankind

http://stackoverflow.com/questions/22667401/postgres-json-data-type-rails-query
http://stackoverflow.com/questions/40702813/query-on-postgres-json-array-field-in-rails

#payload: [{"kind"=>"person"}]
Segment.where("payload @> ?", [{kind: "person"}].to_json)

#data: {"interest"=>["music", "movies", "programming"]}
Segment.where("data @> ?",  {"interest": ["music", "movies", "programming"]}.to_json)
Segment.where("data #>> '{interest, 1}' = 'movies' ")
Segment.where("jsonb_array_length(data->'interest') > 1")

deanmarano

Testing Your Jekyll Site, The Ruby Way

Here at eSpark Learning, we use Jekyll to host our marketing site, https://www.esparklearning.com. Within eSpark Engineering, we love automated testing - most of our codebases require a passing test suite for all changes. As we add more javascript to our Jekyll site, we wanted to add a test framework that would give us real world tests - testing that the HTML was valid was no longer enough.

Acceptance Testing with RSpec, Capybara, and Selenium

To create real world acceptance tests for our site, we used a few technologies we were familiar with:

• RSpec - Behaviour Driven Development for Ruby
• Capybara - Test web applications by simulating how a real user would interact with your app
• Selenium - Selenium automates browsers

esbanarango

Keybase proof

I hereby claim:

• I am esbanarango on github.
• I am esbanarango (https://keybase.io/esbanarango) on keybase.
• I have a public key whose fingerprint is 8087 A142 D24B 5A06 76B9 9F32 239F 5139 6604 FC41

To claim this, I am signing this object:

wesbos

{
  "keys": ["tab"], 
  "command": "expand_abbreviation_by_tab", 

  // put comma-separated syntax selectors for which 
  // you want to expandEmmet abbreviations into "operand" key 
  // instead of SCOPE_SELECTOR.
  // Examples: source.js, text.html - source
  "context": [
    {

danielchappell

import Ember from 'ember';

// Ember 1.10

export default Ember.Route.extend({

//---fire in order on route enter---

beforeModel(transition) {
//empty by default