> That for...of syntax is very nice, is it an official part of ECMAScript 6?
Yes, although it's not implemented in V8 just yet. Once for-of and generator-expressions are implemented, a lot of these operations will become a lot nicer at the language level (rather than relying on cludgy `suspend.map()` or whatever helpers). Here's an example from the ES6 Wiki [1]: (xhrGet(url) for (url of getURLs())) // hawt [1] http://wiki.ecmascript.org/doku.php?id=harmony:generator_expressions On Tuesday, July 16, 2013 2:36:44 AM UTC-4, cpprototypes wrote: > > The code sample I posted was a simplified example to demonstrate the > issue. The actual command line script I was working on uses the response > from the get request for other things. That for...of syntax is very nice, > is it an official part of ECMAScript 6? > > > On Friday, July 12, 2013 2:47:28 PM UTC-7, cpprototypes wrote: >> >> I'm using node 0.11.3 with --harmony-generators to try the new feature. >> I found two libraries that should help use existing node callback-based >> code with generators (suspend and galaxy). The code I'm trying to run was >> similar to the following: >> >> (using suspend) >> >> var fs = require('fs'); >> var request = require('request'); >> >> suspend(function* (resume) { >> var contents = yield fs.readFile('idList.json', 'utf8', resume); >> contents.split('\n').forEach(function(id) { >> var info = yield request.get('http://www.example.com?id='+id, >> resume); >> }); >> })(); >> >> (using galaxy) >> >> var galaxy = require('galaxy'); >> var fs = galaxy.star(require('fs')); >> var request = galaxy.star(require('request')); >> >> function* main() { >> var contents = yield fs.readFile('idList.json', 'utf8'); >> contents.split('\n').forEach(function(id) { >> var info = yield request.get('http://www.example.com?id='+id); >> }); >> }; >> >> galaxy.unstar(main)(function(err, result) { >> console.log('done'); >> }); >> >> Using either library, when node tries to execute the get request ("var >> info = yield request.get...") it exits with the following error: >> >> SyntaxError: Unexpected identifier >> >> And the error highlights the "request" part in "var info = yield >> request.get..." I'm guessing that the creation of the new function scope >> in the forEach is somehow causing an issue. But I'm not sure why it's not >> working. >> >> >> -- -- 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 nodejs@googlegroups.com To unsubscribe from this group, send email to nodejs+unsubscr...@googlegroups.com 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 nodejs+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.