On Tue, Aug 01, 2006 at 10:08:16PM +0200, Stephane Bortzmeyer wrote:
> notFollowedBy seems to work for me and is quite simple, even for my
> brain. Thanks.
Actually, it doesn't work, and is quite subtle, at least for my brain.
There was a discussion in this thread:
http://haskell.org/pipermai
Stephane Bortzmeyer wrote:
> > The first would be to test whether "bb" is followed by "eof" or
> > "comma" before accepting it.
>
> notFollowedBy actually does the opposite (checking that there are no
> more letters).
Are you sure that you don't actually want
*> many1 letter `sepBy1` comma
? J
On Tue, Aug 01, 2006 at 09:41:40AM +0100,
Chris Kuklewicz <[EMAIL PROTECTED]> wrote
a message of 105 lines which said:
> The problem is mentioned here:
>
> http://www.cs.uu.nl/people/daan/download/parsec/parsec.html#notFollowedBy
notFollowedBy seems to work for me and is quite simple, even fo
Stephane Bortzmeyer wrote:
On Mon, Jul 31, 2006 at 06:51:27PM +0100,
Chris Kuklewicz <[EMAIL PROTECTED]> wrote
a message of 102 lines which said:
minilang = do
char 'a'
optional (try (do {comma ; char 'b'}))
optional (do {comma ; char 'c'})
eof
return "OK"
I
On Mon, Jul 31, 2006 at 06:51:27PM +0100,
Chris Kuklewicz <[EMAIL PROTECTED]> wrote
a message of 102 lines which said:
>minilang = do
> char 'a'
> optional (try (do {comma ; char 'b'}))
> optional (do {comma ; char 'c'})
> eof
> return "OK"
I now have a new proble
On Mon, Jul 31, 2006 at 12:57:04PM +0200,
Udo Stenzel <[EMAIL PROTECTED]> wrote
a message of 59 lines which said:
> Now 'optional x' always succeeds, so the 'try' is useless where you
> placed it. You need to 'try' the argument to 'optional':
It works, too. Many thanks for the code and the ex
On Mon, Jul 31, 2006 at 10:59:14AM +0200,
Matthias Fischmann <[EMAIL PROTECTED]> wrote
a message of 89 lines which said:
>try b <|> (return '-')
...
> The (return 'x') is needed for type consistency.
OK, it works. Many thanks for the solution and the explanations.
