[Haskell-cafe] Monads, do and strictness

[David Barbour]

On Sat, Jan 21, 2012 at 10:51 AM, David Menendez <dave at zednenem.com> wrote:

> The Eval monad has the property: return undefined >>= const e = e.
>

You can't write `const e` in the Eval monad.