Yes, I use this technique and I’m glad you found it too. Also note you can put public get and set functions in the return object if you allow for a little munging.
How to rewrite classes using closures in JavaScript
11–20 of 58 posts
Re: How to rewrite classes using closures in JavaScript
#12There are private properties in classes
class Foo { #ImPrivate = true; #meToo() { if(this.#ImPrivate) cantTouchThis(); } }
new Foo().#meToo() === BOOM
Also with using closures for "classes" takes up a whole lot more memory because new instances off all the closures are created for each instance of the class.
Re: How to rewrite classes using closures in JavaScript
#13Seems very odd to hate classes and still insist on doing OOP. If you just break the data and the functionality apart you don’t have to worry about any of this.
Re: How to rewrite classes using closures in JavaScript
#14I'll never work with someone like the author in a team.
Just because of your personal opinions and certain things that don't matter in the end, you want to ruin everybody's development experience.
The proposed solution is way uglier than the standard syntax, and you'll be lucky to get any intellisense or type checking out of it.
Re: How to rewrite classes using closures in JavaScript
#15"Closures are poor man's objects, and vice versa" [0]
[0] - https://stackoverflow.com/questions/2497801/closures-are-poo...
Re: How to rewrite classes using closures in JavaScript
#16> The this prefix is mandatory for every instance property, which increases code bloat.
what does "bloat" mean in this sentence? people use "bloat" liberally nowadays.
Re: How to rewrite classes using closures in JavaScript
#17The venerable master Qc Na was walking with his student, Anton. Hoping to prompt the master into a discussion, Anton said "Master, I have heard that objects are a very good thing - is this true?" Qc Na looked pityingly at his student and replied, "Foolish pupil - objects are merely a poor man's closures."
Chastised, Anton took his leave from his master and returned to his cell, intent on studying closures. He carefully read the entire "Lambda: The Ultimate..." series of papers and its cousins, and implemented a small Scheme interpreter with a closure-based object system. He learned much, and looked forward to informing his master of his progress.
On his next walk with Qc Na, Anton attempted to impress his master by saying "Master, I have diligently studied the matter, and now understand that objects are truly a poor man's closures." Qc Na responded by hitting Anton with his stick, saying "When will you learn? Closures are a poor man's object." At that moment, Anton became enlightened.
Re: How to rewrite classes using closures in JavaScript
#18I learned how to do this shortly before JS added class syntax. While the class syntax is more ergonomic, I appreciate how this technique allows all standard OOP features and it emerges only from first-class functions and objects.
Re: How to rewrite classes using closures in JavaScript
#19Amusing bug:
console.log(`Average height for dogs is ${AVERAGE_HEIGHT_FT} kg`);
Re: How to rewrite classes using closures in JavaScript
#20What is the best and most modern way to write a module where you have public and private functions and data?