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Sun Aug 26 13:08:41 CEST 2007

state monad

a state monad is a nice example of a computation. nothing 'happens' as
long as the monad is not executed explicitly by applying the value to
some initial state. i think this is a nice starting point to formalize
what i'm doing, since it's about the same principle: build a
composition that represents the compilation, and execute it on an
initial state.

so, really, monads are a way to formulate any computation as a
function composition. doesn't that sound familiar?

the thing to find out is

* how my very specialized way of state passing fits in the general
  monad picture.

* why does 'map' feel so strange in Joy/KAT ?

* what is a continuation in KAT?

the last one i can answer, i think. it's a function that takes a
stack, and represents the rest of the compuation. so the continuation
of 'b' in [abcd] is just [cd]. i've added call/cc to base.ss


let's re-read von thun's comments



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