Re: [Haskell-cafe] an idea for modifiyng data/newtype syntax: use `::=` instead of `=`

On 08 Aug 2015, at 23:16, Tom Ellis wrote:

On Sat, Aug 08, 2015 at 11:14:40PM +0200, MigMit wrote:

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On 08 Aug 2015, at 23:11, Tom Ellis wrote:

On Sat, Aug 08, 2015 at 11:02:27PM +0200, MigMit wrote:

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What you say is "if we don't use some perfectly legitimate language constructs and never use third-party code, than 'data' and 'newtype' are the same".

No, not at all. I'm making a much stronger claim than that. I'm claiming the functionality provided by newtype is completely subsumed by that provided by data.

Well, it's certainly unsupported by evidence. Because third-party code CAN distinguish between those.

OK, show me the code!

I did. You removed it when quoting.