when.js 1.5.0 released

[Brian Cavalier]

We just released when.js 1.5.0.  It adds task execution features, and performance improvements:

• New task execution and concurrency management: when/sequence, when/pipeline, and when/parallel.
  
• Performance optimizations for when.all and when.map, up to 2x in some cases.
  
• Options for disabling paranoid mode that provides a significant performance gain in v8 (e.g. Node and Chrome). See this v8 performance problem with Object.freeze for more info.
  
• deferred and deferred.resolver no longer throw when resolved/rejected multiple times. They will return silently as if the they had succeeded. This prevents parties to whom only the resolver has been given from using try/catch to determine the state of the associated promise.
  
• For debugging, you can use the when/debug module, which will still throw when a deferred is resolved/rejected multiple times.

Check it out, and as usual, feel free to post to the group or create an issue on github, if you run into any issues.

[Karolis Narkevičius]

Awesome! Very excited about the sequence/pipeline/parallel! :)

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[unscriptable]

I don't think Brian gave this release enough justice.  The words "wicked fasssst" come to mind. :)

[Brian Cavalier]

Cool.  We're definitely interested in feedback on these.  One open question in my mind: Are both sequence and pipeline needed?  Or is one typically just way more useful than the other?  If you have any thoughts, please let us know!

b