2. Yield, a modern language love
story
Originally Proposed in 1995, the yield keyword became official via the
RFP on June 20th 2013 with PHP 5.5.Generators
Facebook said a Hip, Hop and Don't Stop, and did their own yield
generators in HipHop PHP
3. They are HEAVILY BASED off of Python, with a nod towards the
Mozilla JS implementation and the await C# concept.