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 > > 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 > > 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 > > Cheers, > > Tristan > > -- > -- > 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] <javascript:> > To unsubscribe from this group, send email to > [email protected] <javascript:> > 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] <javascript:>. > For more options, visit https://groups.google.com/groups/opt_out. > > > > >
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