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:
Hello there! This post could not be written any better!
Reading through this post reminds me of my old room mate!
He always kept chatting about this. I will forward this page to him.
Fairly certain he will have a good read. Thank you for sharing!
Have a look at my site; best real estate agent in Cibolo TX
It’s hard to come by knowledgeable people about this subject, however,
you seem like you know what you’re talking about! Thanks
My web site :: real estate agent Chula Vista CA
I was excited to find this web site. I want to to thank you
for ones time just for this fantastic read!! I definitely savored every part of it and I have you book marked to
look at new stuff in your web site.
my web blog … realtor in Fort Lauderdale FL
Discovering innovative technologies in roofing is exciting; can’t wait to share what I’ve learned from Gutter repairs !
Your method of telling everything in this post is really fastidious, every one be
capable of simply be aware of it, Thanks a lot.
Appreciate the comprehensive advice. For more, visit SAT Saltillo .
Do you mind if I quote a couple of your posts as long as I provide credit and sources back to your weblog?
My website is in the exact same niche as yours and my users would truly
benefit from some of the information you present here.
Please let me know if this okay with you. Cheers!
My web blog best realtor in Salt Lake UT
I recently visited the best chiropractor in Puyallup, and my experience was fantastic! The staff was friendly, and the treatment really helped alleviate my back pain Chiropractor Puyallup
Good response in return of this query with real arguments and telling everything regarding that.