lol... I think you're mostly right. That's what happens if I'm looking at
it from only one perspective.
I guess a difference is a minor one, and that would be with the ability to
listen to the "update" event:
full.on('update', function(updatedValue) {
console.log('update:', updatedValue);
});
That seems to be outside of the object meta API yes? (although your point
is well taken, and computed-value doesn't seem like much of an improvement
over it).
Thanks for pointing it out, I need to think some more about it.
On Monday, March 11, 2013 4:00:13 PM UTC-5, Rick Waldron wrote:
>
> I haven't seen anything so far that couldn't be done with the object meta
> API...
>
> var fname = "John", lname = "Doe";
>
> Object.defineProperty(this, "full", {
> get: function() {
> return fname + " " + lname;
> }
> });
>
> full;
> // "John Doe"
>
>
> On Monday, March 11, 2013, Tristan Slominski wrote:
>
>> Thanks Andrey, those are great pointers, I'll take a look.
>>
>> On Monday, March 11, 2013 2:08:09 PM UTC-5, Андрей Листочкин wrote:
>>>
>>> Another similar project:
>>> http://component.io/**weepy/attr<http://component.io/weepy/attr>
>>>
>>> It's a component, not the npm package but it's pretty easy to add it to
>>> your project since it's only one file.
>>>
>>> The API is similar to Knockout js http://knockoutjs.com/**documentation/
>>> **computedObservables.html<http://knockoutjs.com/documentation/computedObservables.html>
>>>
>>> var firstName = attr('John'), lastName = attr('Dow'), fullName =
>>> attr(function () {
>>> return firstName() + ' ' + lastName()
>>> })
>>>
>>> lastName('Resig')
>>>
>>> fullName() // === 'John Resig'
>>>
>>> It does the same thing as your package but does automatic dependency
>>> resolution and tracking. Take a look!
>>>
>>> BTW that's one of the reasons why I prefer something like Knockout or
>>> Angular to Ember.
>>>
>>> Andrey
>>>
>>> On Mar 11, 2013, at 02:22 , Tristan Slominski wrote:
>>>
>>> I saw a presentation, recently, on Ember.js computed properties. This
>>> got me curious about reactive programming.
>>>
>>> computed-value is a tiny library that allows developers to very simply
>>> specify dependencies between properties and recalculate them every time one
>>> of those dependent properties changes. This isn't a new idea, but I've
>>> attempted to make it as small and as powerful as possible. (And in the
>>> spirit of "stream all the things", I attempted to use the new "streams2"
>>> under the hood, so it requires node >= 0.9.12).
>>>
>>> If you're interested in reactive programming I would love some feedback
>>> on the API. It's still brand new, and experimental.
>>>
>>> Here's a computed full name example:
>>>
>>> var cv = require('computed-value');
>>>
>>> var first = cv('John');
>>> var last = cv('Smith');
>>> var full = cv(first, last, function(first, last) {
>>> return first + ' ' + last;
>>> });
>>>
>>> console.log(full.value);
>>>
>>> first.write('Bob');
>>> console.log(full.value);
>>>
>>> full.on('update', function(updatedValue) {
>>> console.log('update:', updatedValue);
>>> });
>>>
>>> last.write('Johnson');
>>>
>>> You can find the project here: https://github.com/**
>>> tristanls/node-computed-value<https://github.com/tristanls/node-computed-value>
>>>
>>> Cheers,
>>>
>>> Tristan
>>>
>>> --
>>> --
>>> Job Board: http://jobs.nodejs.org/
>>> Posting guidelines: https://github.com/joyent/**node/wiki/Mailing-List-*
>>> *Posting-Guidelines<https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines>
>>> You received this message because you are subscribed to the Google
>>> Groups "nodejs" group.
>>> To post to this group, send email to [email protected]
>>> To unsubscribe from this group, send email to
>>> nodejs+un...@**googlegroups.com
>>> For more options, visit this group at
>>> http://groups.google.com/**group/nodejs?hl=en?hl=en<http://groups.google.com/group/nodejs?hl=en?hl=en>
>>>
>>> ---
>>> You received this message because you are subscribed to the Google
>>> Groups "nodejs" group.
>>> To unsubscribe from this group and stop receiving emails from it, send
>>> an email to nodejs+un...@**googlegroups.com.
>>> For more options, visit
>>> https://groups.google.com/**groups/opt_out<https://groups.google.com/groups/opt_out>
>>> .
>>>
>>>
>>>
>>>
>>> --
>> --
>> Job Board: http://jobs.nodejs.org/
>> Posting guidelines:
>> https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines
>> You received this message because you are subscribed to the Google
>> Groups "nodejs" group.
>> To post to this group, send email to [email protected]
>> To unsubscribe from this group, send email to
>> [email protected]
>> For more options, visit this group at
>> http://groups.google.com/group/nodejs?hl=en?hl=en
>>
>> ---
>> You received this message because you are subscribed to the Google Groups
>> "nodejs" group.
>> To unsubscribe from this group and stop receiving emails from it, send an
>> email to [email protected].
>> For more options, visit https://groups.google.com/groups/opt_out.
>>
>>
>>
>
--
--
Job Board: http://jobs.nodejs.org/
Posting guidelines:
https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines
You received this message because you are subscribed to the Google
Groups "nodejs" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to
[email protected]
For more options, visit this group at
http://groups.google.com/group/nodejs?hl=en?hl=en
---
You received this message because you are subscribed to the Google Groups
"nodejs" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
For more options, visit https://groups.google.com/groups/opt_out.
