reactConsole

An event-driven approach to decomposing console programs, which provides for explicit representation of state and functions to provide state-driven output, transition (via state and console input), and termination detection.

Example (REPL) usage:

>>> reactConsole(1, { "${it}!" }, { state,_ -> 2*state }, { it >= 100 }, { "fin." })
1!

2!
does not matter
4!
a
8!
b
16!
1
32!
2
64!

fin.
res1: kotlin.Int = 128

Notes:

• This program will start at 1 (initial state) and after each (ignored via transition function) input

• This program will stop once the state (the result of doubling) is greater than or equal to 100

• While doubling, the output is just the current count (excitedly!), and once termination is achieved, simply "fin."

>>> reactConsole("", { "${it}!" }, { _,input -> input }, { it == "done" })
!
a
a!
b
b!
c
c!
done
done!
res1: kotlin.String = done

Notes:

• The program excitedly (!) mirrors the most recent input (which captures state, initialized as an empty string).

• The program ends when the input is "done", which is output one last time (since the final state->text function, since not supplied, is just the usual.

Parameters