[Haskell-cafe] Why cannot i add the `let` declaration ?

[zaxis]

thanks!


Ivan Lazar Miljenovic wrote:
> 
> zaxis <z_axis at 163.com> writes:
>> find_the_day sDay 0 = sDay
>> find_the_day sDay nDay = 
>>     let nextDay = addDays 1 sDay
>>     if (is_trade_day $ nextDay)
>>     then find_the_day nextDay (nDay - 1)
>>     else find_the_day nextDay nDay
> 
> The correct syntax is let ... in ...; you've forgotten the "in", so
> something like this:
> 
> ,----
> | find_the_day sDay 0 = sDay
> | find_the_day sDay nDay = 
> |     let nextDay = addDays 1 sDay
> |     in if (is_trade_day $ nextDay)
> |        then find_the_day nextDay (nDay - 1)
> |        else find_the_day nextDay nDay
> `----
> 
> Note that in do-blocks you don't need the `in'; in "normal" code you do.
> 
> -- 
> Ivan Lazar Miljenovic
> Ivan.Miljenovic at gmail.com
> IvanMiljenovic.wordpress.com
> _______________________________________________
> Haskell-Cafe mailing list
> Haskell-Cafe at haskell.org
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> 
> 


-----
fac n = foldr (*) 1 [1..n]
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