Explanation
“@instance:” allows us to attach an object/value to the Foo class instead of Foo’s prototype. Recall that “@” in CoffeeScript refers to JavaScript’s “this”.
After “@instance:” there is a function that is immediately executed. This function returns a function, closed around a variable called instance. Both these functions have their context (their “this”) bound to the Foo object using CoffeeScript’s wonderful “define and bind” operator “=>” as opposed to the normal function definition operator “->”.
When called, the function that “@instance” ends up referring to simply checks to see if the “instance” variable is empty and if so, assigns a new instance of Foo to it. Newing up a Foo is done using the “@” symbol since the function’s “this” refers to the Foo object. It then returns the instance.
Output
The CoffeeScript above compiles down to this:
Узнайте всю информацию о Restyle-Авто — официальный дилер, большой ассортимент, лояльная ценовая политика и гарантированные автомобили! Перейдите на https://restyle-avto.ru и посмотрите автомобили на складе. Подбираете машину или самую выгодную сделку — компания предлагает легковые машины, оформление кредита и помощь клиентов. Нужен авто быстро — здесь найдёте оптимальные условия и прозрачные сделки.
Before/after taste tests convinced my spouse. The SoftPro unit plus catalytic carbon for chlorine/chloramine was a win. Installation steps from emergency plumber near me helped.
Airflow is king—Central Plumbing Heating & Air Conditioning measured static pressure and resized our return. System breathes better. Learn at heating service .
I’ve learned so much about driving customer engagement through targeted content from this article; truly valuable information here! WordPress SEO experts
Impressed by the insightful content shared here about San Diego personal injury lawyers. As someone interested in legal guidance, I’ll definitely check out Personal injury lawyer for more valuable information on this topic!
Furnace runs but no airflow? Central Plumbing Heating & Air Conditioning found a collapsed flex duct behind a wall. Their thermal camera nailed it. Get diagnostics via boiler repair .
Eager await newest arrivals showcasing latest advancements implemented techniques employed enhancing overall efficacy proven results gained positively impacting lives enhancing lifestyles overall significantly improving wellness ensuring satisfaction carpet cleaning
Accessibility design can’t be overlooked. We learned to evaluate floor plans and hall widths on respite care .
Wow, wonderful blog layout! How long have you been blogging
for? you make blogging look easy. The overall look of your web site is great,
as well as the content!
my page; Uganda safaris
Every homeowner needs to know about reliable board up services like yours! Great job promoting it! board up service near me
Enjoy licensed, simple and secure financial trading platform with markets.com.
Trade CFD on Forex, Shares, Commodities, Indices, ETFs, and more now!