[Haskell-cafe] fromString and toString

[Atze van der Ploeg]

Isn't toString just show?
On Feb 4, 2014 3:20 PM, "Johannes Waldmann" <waldmann at imn.htwk-leipzig.de>
wrote:

> Ben Foppa <benjamin.foppa <at> gmail.com> writes:
>
> > But do we have an inverse generic function toString defined anywhere?
>
> well, we have:  class Show a where show :: a -> String
>
> > likereString :: (IsString a, IsString b) => a -> b
>
> well you probably don't want to actually convert from a to String
> (= List of Char) then from there to b,
> so it would need to be accompanied by some RULES
> (for specific instances of a, b) for efficiency.
>
> This still does not answer the concern whether it is
> (semantically) wise to have String as the "base" concept here.
>
> - J.W.
>
>
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