C K Kashyap wrote:
Thanks Daniel,
Better refactorability.
If you're using monadic style, changing from, say,
State Thing
to
StateT Thing OtherMonad
or from
StateT Thing FirstMonad
to
StateT Thing SecondMonad
typically requires only few changes. Explicit state-passing usually
requires more changes.
So, performance gain (runtime/memory) is not a side effect of Monadic style
right?
Generally speaking, right: monadic style won't improve performance.
However, using monadic notation may allow you to change the backing
monad to a different representation of "the same" computation, thereby
giving asymptotic improvements[1]. However, the improvements themselves
are coming from the different representation; the use of monadic
notation just allows you to switch the representation without altering
the code.
[1] http://www.iai.uni-bonn.de/~jv/mpc08.pdf
--
Live well,
~wren
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