[Haskell-cafe] Type classes for converting to Text and String

[Simon Hengel]

On Thu, Mar 08, 2012 at 12:37:31PM +0100, Yves Parès wrote:
> If you just need to go back and forth from String to Text, why do you need
> to be generic? pack and unpack from Data.Text do the job.

Always going through String or Text may (depending on what your
underlying representation is) be less efficient than converting directly
to String/Text.

Cheers,
Simon