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Today's Topics:
1. Re: Rose tree (mike h)
2. Autogenerating tuple constructor of length n (Manikanda Krishnan)
3. dynamic code compilation and loading (Dennis Raddle)
----------------------------------------------------------------------
Message: 1
Date: Mon, 9 Jan 2017 21:06:35 +0000
From: mike h <mike_k_hough...@yahoo.co.uk>
To: The Haskell-Beginners Mailing List - Discussion of primarily
beginner-level topics related to Haskell <beginners@haskell.org>
Subject: Re: [Haskell-beginners] Rose tree
Message-ID: <447e2083-42af-4ba9-84c0-baa2a5f4c...@yahoo.co.uk>
Content-Type: text/plain; charset=utf-8
add :: Eq a => a -> a -> RoseTree a -> RoseTree a
add x px (Node x' []) = Node x' [Node x []]
add x px (Node x' trees)
| px == x' = Node x' $ (Node x []):trees
| otherwise = Node x' $ (add x px) <$> trees
seems to be correct.
:)
> On 8 Jan 2017, at 20:06, mike h <mike_k_hough...@yahoo.co.uk> wrote:
>
> Hi,
>
> I’m rapidly descending into a spiral of confusion! :)
>
> How do I add something to a rose tree?
>
> I have
>
> data Tree a = Node a [Tree a] deriving (Show)
>
> add :: Eq a => a -> a -> Tree a -> Tree a
>
> and the first ‘a’ is the thing to add and the second is its parent node.
> i.e.
> add :: Eq a => a -> a -> Tree a -> Tree a
> add x px (Node x' []) = Node x' [Node x []]
> …..
>
> I’ve tried various ways for the more general case but always seem to lose
> part of the tree.
>
> Any advice would be very welcome.
>
> Thanks
>
> Mike
------------------------------
Message: 2
Date: Tue, 10 Jan 2017 07:47:17 +0530
From: Manikanda Krishnan <vmk8...@gmail.com>
To: The Haskell-Beginners Mailing List - Discussion of primarily
beginner-level topics related to Haskell <Beginners@haskell.org>
Subject: [Haskell-beginners] Autogenerating tuple constructor of
length n
Message-ID:
<cac_d3yxv7abwz5dyozubfyld2c0mxrwonwhmdjyqa4pe6c_...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Hi,
I am exploring haskell.
Is there a way to generate a tuple constructor of n elements at runtime?
Basically I want to convert a list of lists into a list of n tuples.
Thanks in advance
Mani
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Message: 3
Date: Mon, 9 Jan 2017 18:45:05 -0800
From: Dennis Raddle <dennis.rad...@gmail.com>
To: Haskell Beginners <beginners@haskell.org>
Subject: [Haskell-beginners] dynamic code compilation and loading
Message-ID:
<cakxlvoqoshqkvbztt2pcnbgtwdyiet31sr5qkjntkopwx9q...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Can I get a pointer to how to do dynamic code compilation and loading into
a running program?
D
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