FS2 Tutorial

This is a self-guided tutorial to FS2, using streaming data analytics for the majority of examples. It's a combination of text and coding exercises.

Go to the tutorial

Plan

This is the rough plan for contents:

• FS2 Stream as akin to List
  • The Stream API works like List, except:
    • contents are (potentially) arranged in time not space
    • separation between description and action (as in IO) so need to "compile" the Stream
  • Basic examples: map, filter, etc.
  • Calculating averages
    • Naive approach
    • Incremental approach (e.g. https://math.stackexchange.com/questions/106700/incremental-averaging)
    • EWMA
• Effects in FS2
• Fan-in and fan-out
  • Pull based model
  • Tools for each
• Streaming algorithms
  • Single pass
  • Streaming average
  • Reservoir sampling
  • Hyperloglog
  • Sliding and tumbling windows