[Haskell-cafe] Template Haskell: let statement in a splice put in the "main = do" part of a program?

Brandon Allbery allbery.b at gmail.com
Sat Aug 24 18:03:02 CEST 2013


On Sat, Aug 24, 2013 at 11:00 AM, TP <paratribulations at free.fr> wrote:

> main = do
>
> $(makeLetStatement "a")
> -- print a
>

Is that the actual indentation you used? Because it's wrong if so, and the
error you would get is the one you're reporting. Indentation matters in
Haskell.

    In an equation for `main': main = do { $(makeLetStatement "a") }
>

You cannot *end* a do with a let-statement; it requires something else
following it. You have nothing following it, as shown by the above fragment
from the error message.

-- 
brandon s allbery kf8nh                               sine nomine associates
allbery.b at gmail.com                                  ballbery at sinenomine.net
unix, openafs, kerberos, infrastructure, xmonad        http://sinenomine.net
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