Declaring vars in a function, private vars in a class or not using export in a
module often have similar objectives and ultimately is the decision of the
author. For serializable data structures that are reified in various places,
private is overkill and would complicate JSON.{stringify,parse}. Perhaps an
author wants to keep a definition 'open' and sees no reason for private. The
language should enable but not require a variety of use cases which I think is
the main point here.
On Nov 2, 2011, at 2:56 PM, Jake Verbaten <[email protected]> wrote:
>>
>> I don't think I've ever heard an active JavaScript developer, who has been
>> programming in JavaScript longer than 6 months, ask for private class or
>> instance variables.
> Your own code:
> https://github.com/mikeal/npmjs.org/commit/c0d9cc77e79504b9a7c23b4fac735dde97444054#L3R10
> Line 35, you define the function stopBuffering (keeping only relevant parts):
> ----
> function File (options) {
>
> var stopBuffering = function () {
> // ...
> }
>
> }
> ----
> Why didn't you do this.stopBuffering = function(){}?
>
> Maybe you used the keyword "var", but you effectively created a private
> method of your "File" class. With a class syntax, you would have used the
> "private" keyword to achieve the same thing.
> Maybe you don't call it this way, but you use (and de facto ask for) privacy.
>
> I think making such broad statements as "every local variable is actually a
> 'private' variable" is just plain silly.
>
> To me that looks like a utility method for code organisation points.
>
> "private" means its a private method/data that's used in other methods of an
> object. That particular function is not used in any method.
>
> And no, with class syntax it would not be private, it would still be a
> utility function inside the constructor.
>
> I personally second that we don't need private or instance variables.
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