Re: [Haskell-cafe] typeclass constraints?

5 Nov 2016

      Yes – I could move the show() back to the test definitions.
This was also mostly/partly to better understand how to do this.

Thanks.

From: Brandon Allbery [mailto:allbery.b@gmail.com]
Sent: Saturday, November 5, 2016 3:51 PM
To: Gregory Guthrie 
Cc: haskell-cafe@haskell.org
Subject: Re: [Haskell-cafe] typeclass constraints?

On Sat, Nov 5, 2016 at 3:09 PM, Gregory Guthrie mailto:guthrie@mum.edu> wrote:
So each test is of type: (String, value), for various value types all of which (only) have to be members of the Show class.

Had you considered [(String, String)]? Remember that Haskell is lazy; it's not going to evaluate those expressions until their values are needed for e.g. I/O.

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