Play didn't invent the iteratee concept, Oleg Kiselyov did (http://okmij.org/ftp/Streams.html). I asked myself the same question, as I'm doing the reactive programming course on Coursera, where Rx was the topic of the last couple weeks. I came to the conclusion that Rx focuses on side-effects while iteratees concentrate on iterative calculations. Iteratees calculate a result while Rx-observers just perform side-effects.
Maybe someone else can further elaborate on this topic.
I really like the extension but what I'm missing is auto refresh and opening links in new tabs (both comments and articles). That functionality is offered by another extension (https://chrome.google.com/webstore/detail/hackemup/abjhkncpe...) but sadly both extensions seem to be incompatible (after browser restart).
Ressources about programming which are not primarily meant for programmers are always interesting to read/watch. The recipe metaphor reminds me of this (http://www.irishtimes.com/newspaper/finance/2011/0429/122429...) article which distinguishes between cooking recipes and mathematical formulae.
I tried MacRuby once a few months ago (https://github.com/tilltheis/fullscreenclock) and I have to tell you the Cocoa parts lacked some essential features (like correct syncing of Ruby and Cocoa setters).
But the nice thing about it is that you can intermix Obj-C and Ruby code freely to write the low level parts of your app in C/Obj-C if you want to. There is even a bridge between C/Obj-C and Ruby which enables you to call native functions from your Ruby code.
I get that all the time but it seems to be a problem with Chrome. Some people say clearing the cache would fix it but that doesn't work for me. I have no such problems in Firefox though.
It's not only Databases but Machine Learning and AI as well. I'm really looking forward to these Stanford classes and hope to take them successfully while doing my actual studies.
Xmarks on the other hand supports tagging which Google still not managed to implement.
I'm using Xmarks (for cross-browser syncing) as well as Chrome's native sync but after setting up a new OS install I've got every bookmark twice.