How to override a type class instance ?

Johannes Joachim Engels

18 Oct 2014 18 Oct '14

10:02 a.m.

Attachments:

attachment.html (text/html — 1.3 KB)

Show replies by date

Nadir Sampaoli

18 Oct 18 Oct

noon

Hi,

...

say, I am not happy with the Show instances of arrays, e.g.

You usually wrap the data type in a newtype and use GeneralizedNewtypeDeriving to derive the classes you want to keep. Then write custom instances for the type classes you want to override.

4246

Age (days ago)

4246

Last active (days ago)

List overview

Download

1 comments

2 participants

participants (2)

Johannes Joachim Engels
Nadir Sampaoli

Johannes Joachim Engels

Nadir Sampaoli

tags

participants (2)