On Apr 28, 2014, at 5:02 PM, Darius Jahandarie wrote:

+1. I've defined this practically every time I've used the strict state monad.

-- Darius Jahandarie (Mobile)

Likewise, +1 Anthony

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On Apr 28, 2014, at 3:36 PM, Niklas Hambüchen wrote:

Code like

flip execState 0 (forever $ modify (+1))

leaks memory as hell, and gets fixed by using

x <- get put $! x + 1

I propose the addition of modify' to Control.Monad.State.Strict.

This seems useful for the strict state monad and is consistent with similar functions in base (such as modifyIORef').

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+1 from me. I've had to reinvent this a few times myself. On Mon, Apr 28, 2014 at 5:22 PM, Alexander Berntsen wrote:

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+1.

Seems like a very logical candidate for a strict version.

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