Types for Data.Sequence pattern synonyms

Ivan Lazar Miljenovic ivan.miljenovic at gmail.com
Wed Apr 20 21:49:21 UTC 2016

On 21 April 2016 at 02:55, Henning Thielemann
<lemming at henning-thielemann.de> wrote:
> On Wed, 20 Apr 2016, David Feuer wrote:
>> As discussed, I plan to add pattern synonyms Empty, :<|, and :|> to
>> make working with sequences more convenient. The remaining question is
>> what types they should have. From the Data.Sequence standpoint, the
>> best thing would be to make them work *only* for Seq, so that the Seq
>> type will be inferred from their use. However, modules using multiple
>> sequence types might benefit from more flexibility, via ad hoc
>> classes.
> I prefer that Data.Sequence exports functions with the Seq type and that
> generalized functions are exported by a different module that is intended
> for generalization. The specific and general infix operators could have the
> same symbol and the user could choose via the module import which one to
> use.


Ivan Lazar Miljenovic
Ivan.Miljenovic at gmail.com

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