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Today's Topics:
1. Re: How do I use Guards in record syntax? (Kim-Ee Yeoh)
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Message: 1
Date: Mon, 14 Apr 2014 18:22:13 +0700
From: Kim-Ee Yeoh <[email protected]>
To: The Haskell-Beginners Mailing List - Discussion of primarily
beginner-level topics related to Haskell <[email protected]>
Subject: Re: [Haskell-beginners] How do I use Guards in record syntax?
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<CAPY+ZdTJ=6cyeaawvc+4npwnb99r439opoen2zwtt4tgwz9...@mail.gmail.com>
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On Mon, Apr 14, 2014 at 1:03 PM, Dimitri DeFigueiredo <
[email protected]> wrote:
> oldbuysell :: String -- "buy", "sell" or ""
Why is this String when you've defined the perfectly cromulent BuyOrSell
datatype?
How can you be sure there won't be some accidental buggy code that sets the
field to "buyy"?
-- Kim-Ee
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