I am reading Learn you a Haskell for great good and on page 40 -
as-patterns.
I have changed the example slightly to be:
firstLetter :: String -> String
firstLetter "" = "Empty string, oops"
firstLetter all@(x:xs) = "The first letter of " ++ all ++ " is " ++ [x] ++
" otherbit " ++ xs
Then can use
Hi,
Write firstLetter all@(x:xs) = "The first letter of " ++ all ++ " is " ++ [x]
++ " otherbit " ++ xs
Nadav
From: haskell-boun...@haskell.org [mailto:haskell-boun...@haskell.org] On
Behalf Of Angus Comber
Sent: Wednesday, April 03, 2013 12:01 PM
To: Haskell Mailing List
Subject: [Haskell] Has
On Wed, 3 Apr 2013, Angus Comber wrote:
I am reading Learn you a Haskell for great good and on page 40 - as-patterns.
This question is certainly better for the beginners list:
http://www.haskell.org/mailman/listinfo/beginners
In your case
x :: Char
xs :: [Char]
[x] :: Char
Tha
On 3 April 2013 11:15, Henning Thielemann wrote:
>x :: Char
>xs :: [Char]
>
>[x] :: Char
>
You meant [x] :: [Char] here, of course. :-)
--
Denis Kasak
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> Also xs is of what type? list of values? So does this mean x is an element
> and xs must be of type list
Exactly.
x is of type Char and xs is of type [Char].
The list concatenation function (++) expects both of its arguments to be lists,
so that's the reason you need to turn a Char x into a l
On Wed, Apr 3, 2013 at 5:01 AM, Angus Comber wrote:
> In the (x:xs) : just delimits each element. so x is the first element. Why
> can I not print by using x?
>
> Also xs is of what type? list of values? So does this mean x is an element
> and xs must be of type list? Confused...
>
Actually, you
Yes it seems that ++ concatenates lists not elements and that was the
underlying problem.
I have subscribed to the beginners list - didn't know there was one for
people like me just starting to walk :)
On 3 April 2013 14:39, Brandon Allbery wrote:
> On Wed, Apr 3, 2013 at 5:01 AM, Angus Comber
I am pleased to annouce the release of adobe-swatch-exchange 0.1.0.0.
My primary motivation in writing this is to make it easier to download
color swatches from http://kuler.adobe.com/ and test them on my site.
Though, perhaps there is already a great way of doing this and I
didn't look hard enoug
Welcome to issue 264 of the HWN, an issue covering crowd-sourced bits
of information about Haskell from around the web. This issue covers the
week of March 17 to 30, 2013.
Quotes of the Week
* ddarius: (f x) is a partial application iff
f x == (curry (uncurry f) x)
* flebron: "Hey, I
