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Today's Topics:
1. Error Message when trying to solve alphametic(SEND + MORE =
MONEY) (Sok Ha Chang)
2. Re: Error Message when trying to solve alphametic(SEND +
MORE = MONEY) (Matthew Moppett)
3. Re: Error Message when trying to solve alphametic(SEND +
MORE = MONEY) (Matthew Moppett)
4. Re: Error Message when trying to solve alphametic(SEND +
MORE = MONEY) (Sok Ha Chang)
5. Re: Error Message when trying to solve alphametic(SEND +
MORE = MONEY) (Sok Ha Chang)
----------------------------------------------------------------------
Message: 1
Date: Sun, 26 Jan 2014 21:16:15 +0900
From: Sok Ha Chang <[email protected]>
To: [email protected]
Subject: [Haskell-beginners] Error Message when trying to solve
alphametic(SEND + MORE = MONEY)
Message-ID: <[email protected]>
Content-Type: text/plain; charset=euc-kr
Hi.
I?m new to Haskell.
Use Haskell Platform on MacBook Air.
$ ghc --version
The Glorious Glasgow Haskell Compilation System, version 7.6.3
I?m try to solve alphametic.
SEND + MORE = MONEY
Here is code?
----------------------------------------------------------------------------------------------------------
import Data.List
decryp :: [Int] -> String -> String
decryp (s:e:n:d:o:r:y:[]) a =
if send + more == money then expr:a else a
where
send = s * 1000 + e * 100 + n * 10 + d
more = 1000 + o * 100 + r * 10 + e
money = 10000 + o * 1000 + n * 100 + e * 10 + y
expr = show send ++ "+" ++ show more ++ "=" show money
decrypSolver :: [String]
decrypSolver =
foldr decryp [] (permutations 7 [0, 2, 3, 4, 5, 6, 7, 8, 9])
----------------------------------------------------------------------------------------------------------
Error Messages is
./decrypSolver.hs: line 10, column 60:
Couldn't match expected type `(a0 -> String) -> Int -> [Char]'
with actual type `[Char]'
The function `"="' is applied to two arguments,
but its type `[Char]' has none
In the second argument of `(++)', namely `"=" show money'
In the second argument of `(++)', namely
`show more ++ "=" show money?
----------------------------------------------------------------------------------------------------------
How can I fix this?
Thank you.
Sincerely, S. Chang
------------------------------
Message: 2
Date: Sun, 26 Jan 2014 19:24:00 +0700
From: Matthew Moppett <[email protected]>
To: The Haskell-Beginners Mailing List - Discussion of primarily
beginner-level topics related to Haskell <[email protected]>
Subject: Re: [Haskell-beginners] Error Message when trying to solve
alphametic(SEND + MORE = MONEY)
Message-ID:
<camlejzbxchjekkyhvqnjdyqb3u9t-xw6td4frl4fwx5yv5f...@mail.gmail.com>
Content-Type: text/plain; charset=windows-1252
Hi Sok Ha.
expr = show send ++ "+" ++ show more ++ "=" show money
On Sun, Jan 26, 2014 at 7:16 PM, Sok Ha Chang <[email protected]> wrote:
> Hi.
> I?m new to Haskell.
> Use Haskell Platform on MacBook Air.
> $ ghc --version
> The Glorious Glasgow Haskell Compilation System, version 7.6.3
>
> I?m try to solve alphametic.
> SEND + MORE = MONEY
>
> Here is code?
> ----------------------------------------------------------------------------------------------------------
> import Data.List
>
> decryp :: [Int] -> String -> String
> decryp (s:e:n:d:o:r:y:[]) a =
> if send + more == money then expr:a else a
> where
> send = s * 1000 + e * 100 + n * 10 + d
> more = 1000 + o * 100 + r * 10 + e
> money = 10000 + o * 1000 + n * 100 + e * 10 + y
> expr = show send ++ "+" ++ show more ++ "=" show money
>
> decrypSolver :: [String]
> decrypSolver =
> foldr decryp [] (permutations 7 [0, 2, 3, 4, 5, 6, 7, 8, 9])
> ----------------------------------------------------------------------------------------------------------
>
> Error Messages is
> ./decrypSolver.hs: line 10, column 60:
> Couldn't match expected type `(a0 -> String) -> Int -> [Char]'
> with actual type `[Char]'
> The function `"="' is applied to two arguments,
> but its type `[Char]' has none
> In the second argument of `(++)', namely `"=" show money'
> In the second argument of `(++)', namely
> `show more ++ "=" show money?
> ----------------------------------------------------------------------------------------------------------
>
> How can I fix this?
>
> Thank you.
>
> Sincerely, S. Chang
> _______________________________________________
> Beginners mailing list
> [email protected]
> http://www.haskell.org/mailman/listinfo/beginners
------------------------------
Message: 3
Date: Sun, 26 Jan 2014 19:31:19 +0700
From: Matthew Moppett <[email protected]>
To: The Haskell-Beginners Mailing List - Discussion of primarily
beginner-level topics related to Haskell <[email protected]>
Subject: Re: [Haskell-beginners] Error Message when trying to solve
alphametic(SEND + MORE = MONEY)
Message-ID:
<camlejzctupw7ycintvb+wgthvkdyh+gv+zyyfhd394y9bfo...@mail.gmail.com>
Content-Type: text/plain; charset="windows-1252"
Sorry about the last post -- I accidentally clicked "send" before I'd
written my message.
Sok Ha:
expr = show send ++ "+" ++ show more ++ "=" show money
should read
expr = show send ++ "+" ++ show more ++ "=" ++ show money
The error message is rather cryptic -- ghc seems to assume that "=" must be
intended as a function, since it it has other values (potential arguments)
to the right of it. I usually don't spend much time trying to figure out
ghc error messages unless I really can't solve the problem by just looking
over the offending line carefully. Very often it's just a typo (as it seems
to be in your case).
On Sun, Jan 26, 2014 at 7:24 PM, Matthew Moppett
<[email protected]>wrote:
> Hi Sok Ha.
>
> expr = show send ++ "+" ++ show more ++ "=" show money
>
>
>
> On Sun, Jan 26, 2014 at 7:16 PM, Sok Ha Chang <[email protected]> wrote:
> > Hi.
> > I?m new to Haskell.
> > Use Haskell Platform on MacBook Air.
> > $ ghc --version
> > The Glorious Glasgow Haskell Compilation System, version 7.6.3
> >
> > I?m try to solve alphametic.
> > SEND + MORE = MONEY
> >
> > Here is code?
> >
> ----------------------------------------------------------------------------------------------------------
> > import Data.List
> >
> > decryp :: [Int] -> String -> String
> > decryp (s:e:n:d:o:r:y:[]) a =
> > if send + more == money then expr:a else a
> > where
> > send = s * 1000 + e * 100 + n * 10 + d
> > more = 1000 + o * 100 + r * 10 + e
> > money = 10000 + o * 1000 + n * 100 + e * 10 + y
> > expr = show send ++ "+" ++ show more ++ "=" show money
> >
> > decrypSolver :: [String]
> > decrypSolver =
> > foldr decryp [] (permutations 7 [0, 2, 3, 4, 5, 6, 7, 8, 9])
> >
> ----------------------------------------------------------------------------------------------------------
> >
> > Error Messages is
> > ./decrypSolver.hs: line 10, column 60:
> > Couldn't match expected type `(a0 -> String) -> Int -> [Char]'
> > with actual type `[Char]'
> > The function `"="' is applied to two arguments,
> > but its type `[Char]' has none
> > In the second argument of `(++)', namely `"=" show money'
> > In the second argument of `(++)', namely
> > `show more ++ "=" show money?
> >
> ----------------------------------------------------------------------------------------------------------
> >
> > How can I fix this?
> >
> > Thank you.
> >
> > Sincerely, S. Chang
> > _______________________________________________
> > Beginners mailing list
> > [email protected]
> > http://www.haskell.org/mailman/listinfo/beginners
>
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Message: 4
Date: Sun, 26 Jan 2014 22:26:24 +0900
From: Sok Ha Chang <[email protected]>
To: The Haskell-Beginners Mailing List - Discussion of primarily
beginner-level topics related to Haskell <[email protected]>
Cc: The Haskell-Beginners Mailing List - Discussion of primarily
beginner-level topics related to Haskell <[email protected]>
Subject: Re: [Haskell-beginners] Error Message when trying to solve
alphametic(SEND + MORE = MONEY)
Message-ID: <[email protected]>
Content-Type: text/plain; charset=euc-kr
How stupid I am?
Thank you very much !
Have a nice day.
Thanks, again.
Sincerely, S. Chang
2014. 1. 26. ?? 9:24 Matthew Moppett <[email protected]> ??:
> Hi Sok Ha.
>
> expr = show send ++ "+" ++ show more ++ "=" show money
>
>
>
>> On Sun, Jan 26, 2014 at 7:16 PM, Sok Ha Chang <[email protected]> wrote:
>> Hi.
>> I?m new to Haskell.
>> Use Haskell Platform on MacBook Air.
>> $ ghc --version
>> The Glorious Glasgow Haskell Compilation System, version 7.6.3
>>
>> I?m try to solve alphametic.
>> SEND + MORE = MONEY
>>
>> Here is code?
>> ----------------------------------------------------------------------------------------------------------
>> import Data.List
>>
>> decryp :: [Int] -> String -> String
>> decryp (s:e:n:d:o:r:y:[]) a =
>> if send + more == money then expr:a else a
>> where
>> send = s * 1000 + e * 100 + n * 10 + d
>> more = 1000 + o * 100 + r * 10 + e
>> money = 10000 + o * 1000 + n * 100 + e * 10 + y
>> expr = show send ++ "+" ++ show more ++ "=" show money
>>
>> decrypSolver :: [String]
>> decrypSolver =
>> foldr decryp [] (permutations 7 [0, 2, 3, 4, 5, 6, 7, 8, 9])
>> ----------------------------------------------------------------------------------------------------------
>>
>> Error Messages is
>> ./decrypSolver.hs: line 10, column 60:
>> Couldn't match expected type `(a0 -> String) -> Int -> [Char]'
>> with actual type `[Char]'
>> The function `"="' is applied to two arguments,
>> but its type `[Char]' has none
>> In the second argument of `(++)', namely `"=" show money'
>> In the second argument of `(++)', namely
>> `show more ++ "=" show money?
>> ----------------------------------------------------------------------------------------------------------
>>
>> How can I fix this?
>>
>> Thank you.
>>
>> Sincerely, S. Chang
>> _______________________________________________
>> Beginners mailing list
>> [email protected]
>> http://www.haskell.org/mailman/listinfo/beginners
> _______________________________________________
> Beginners mailing list
> [email protected]
> http://www.haskell.org/mailman/listinfo/beginners
------------------------------
Message: 5
Date: Sun, 26 Jan 2014 22:29:24 +0900
From: Sok Ha Chang <[email protected]>
To: The Haskell-Beginners Mailing List - Discussion of primarily
beginner-level topics related to Haskell <[email protected]>
Cc: The Haskell-Beginners Mailing List - Discussion of primarily
beginner-level topics related to Haskell <[email protected]>
Subject: Re: [Haskell-beginners] Error Message when trying to solve
alphametic(SEND + MORE = MONEY)
Message-ID: <[email protected]>
Content-Type: text/plain; charset="euc-kr"
Thank you to kind help.
>From now on, I will follow your way.
Have a nice day.
Thanks, again.
Sincerely, S. Chang
2014. 1. 26. ?? 9:31 Matthew Moppett <[email protected]> ??:
> Sorry about the last post -- I accidentally clicked "send" before I'd written
> my message.
>
> Sok Ha:
>
> expr = show send ++ "+" ++ show more ++ "=" show money
>
> should read
>
> expr = show send ++ "+" ++ show more ++ "=" ++ show money
>
> The error message is rather cryptic -- ghc seems to assume that "=" must be
> intended as a function, since it it has other values (potential arguments) to
> the right of it. I usually don't spend much time trying to figure out ghc
> error messages unless I really can't solve the problem by just looking over
> the offending line carefully. Very often it's just a typo (as it seems to be
> in your case).
>
>
>> On Sun, Jan 26, 2014 at 7:24 PM, Matthew Moppett <[email protected]>
>> wrote:
>> Hi Sok Ha.
>>
>> expr = show send ++ "+" ++ show more ++ "=" show money
>>
>>
>>
>> On Sun, Jan 26, 2014 at 7:16 PM, Sok Ha Chang <[email protected]> wrote:
>> > Hi.
>> > I?m new to Haskell.
>> > Use Haskell Platform on MacBook Air.
>> > $ ghc --version
>> > The Glorious Glasgow Haskell Compilation System, version 7.6.3
>> >
>> > I?m try to solve alphametic.
>> > SEND + MORE = MONEY
>> >
>> > Here is code?
>> > ----------------------------------------------------------------------------------------------------------
>> > import Data.List
>> >
>> > decryp :: [Int] -> String -> String
>> > decryp (s:e:n:d:o:r:y:[]) a =
>> > if send + more == money then expr:a else a
>> > where
>> > send = s * 1000 + e * 100 + n * 10 + d
>> > more = 1000 + o * 100 + r * 10 + e
>> > money = 10000 + o * 1000 + n * 100 + e * 10 + y
>> > expr = show send ++ "+" ++ show more ++ "=" show money
>> >
>> > decrypSolver :: [String]
>> > decrypSolver =
>> > foldr decryp [] (permutations 7 [0, 2, 3, 4, 5, 6, 7, 8, 9])
>> > ----------------------------------------------------------------------------------------------------------
>> >
>> > Error Messages is
>> > ./decrypSolver.hs: line 10, column 60:
>> > Couldn't match expected type `(a0 -> String) -> Int -> [Char]'
>> > with actual type `[Char]'
>> > The function `"="' is applied to two arguments,
>> > but its type `[Char]' has none
>> > In the second argument of `(++)', namely `"=" show money'
>> > In the second argument of `(++)', namely
>> > `show more ++ "=" show money?
>> > ----------------------------------------------------------------------------------------------------------
>> >
>> > How can I fix this?
>> >
>> > Thank you.
>> >
>> > Sincerely, S. Chang
>> > _______________________________________________
>> > Beginners mailing list
>> > [email protected]
>> > http://www.haskell.org/mailman/listinfo/beginners
>
> _______________________________________________
> Beginners mailing list
> [email protected]
> http://www.haskell.org/mailman/listinfo/beginners
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