Just like Cons and Nil, Conc can be supported by the compiler as a valid representation of a list. For a build this is very easy: just concat the arguments.

Submitted on 27 November 2004 at 10:48

On 26 June 2005 at 17:49 Jira commented:

STR-210, visser:
This has effectively been achieved in the new implementation of desugar-list matching. The consequence is that Conc can no longer be used as a free term constructor.

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