Problem: Define the word Fold

[ylorph]

[MerrionComputing]

Does this have an event-centric meaning other than the functional programming meaning of fold?

[ylorph]

I'm referring to what greg says => state is a left fold of the events list

[bartelink]

It happens to map very much to the intrinsic FP meaning; for me that implies:

• building a state (generally without context)
• from an initial state
• logically from individual events

Example of a fold function - pretty much all FP langs have a fold (it's called Aggregate in LINQ)