I ran into this in an example before too. I believe that 'ast' is an
old form of pseudo quotation so replace the ast { 1 + 2 } with [| 1 +2
|]
On Sun, Jul 6, 2008 at 2:06 AM, Eric <
FREDERICK.Mao@...> wrote:
>
> i follow the tutorial,do the example on booish
> ast{1+2}
> it shows Error:unknow identifiter: 'ast'
> is there anything wrong?
> >
>
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