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:
If your soffits are discolored, you might have ventilation problems. We’re getting a consult with high-quality eavestrough systems to sort out airflow and roofing.
This is the pleasant area in between fancy and acquainted. I have actually included it on scallops Loomis .
Thanks for a marvelous posting! I definitely enjoyed reading it, you happen to be a great author.
I will remember to bookmark your blog and will often come back from now on. I want to encourage one to
continue your great work, have a nice day!
This was highly educational. More at respite care services .
I didn’t have an understanding of ductwork mattered most. I’m scheduling an inspection by using Canadian Heating and Air Conditioning hamilton ahead of exchanging my furnace.
This was quite helpful. For more, visit experiencias en trámites de extranjería .