I meant along these lines:
var http = require("http")
var s = http.createServer()
s instanceof http.Server // true
But I agree Scott's node history lesson is enlightening here
On Mon, Apr 15, 2013 at 7:48 AM, Joel Brandt <[email protected]> wrote:
> Hi Bryce,
>
> In general, that's a good guess. However, in the http.Server case, the
> Server constructor includes a "new" guard:
>
> function Server(requestListener) {
>> if (!(this instanceof Server)) return new Server(requestListener);
>> net.Server.call(this, { allowHalfOpen: true });
>> ...
>> }
>
>
> So, as I read it, the following should all be equivalent:
>
> s = http.createServer([listener])
>> s = http.Server([listener])
>> s = new http.Server([listener])
>
>
> btw, here's the code if you want to have a look:
> https://github.com/joyent/node/blob/v0.8.23-release/lib/http.js#L1748
>
> Best,
> -- Joel
>
>
>
> On Monday, April 15, 2013 7:41:34 AM UTC-7, [email protected] wrote:
>
>> One simple reason could be to allow instanceof checks the http.Server
>>
>> -Bryce
>>
>>
>> On Mon, Apr 15, 2013 at 7:36 AM, Joel Brandt <[email protected]> wrote:
>>
>>> Hi,
>>>
>>> I'm curious about a patter that occurs at multiple places in the core
>>> node library.
>>>
>>> In the http module (and other places), there are both exported
>>> constructors and exported factory functions for the same objects (e.g.
>>> http.Server() and http.createServer()). In many cases, the factory
>>> functions are just wrappers around the constructor. For example, the code
>>> for http.createServer in v0.8.23 is simply:
>>>
>>> exports.createServer = function(requestListener) {
>>>> return new Server(requestListener);
>>>> };
>>>
>>>
>>> Can anyone explain why both are exported? Since createServer exists, I
>>> assume it's preferable to use that (perhaps for future-proofing one's
>>> code)? I'd also be interested to read any thoughts about when factory
>>> functions are preferable to constructors in the JS world.
>>>
>>> Thanks,
>>> -- Joel
>>>
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