[Haskell-cafe] [ANN] ttc-184.108.40.206 - Textual Type Classes
lemming at henning-thielemann.de
Thu Jun 3 05:57:25 UTC 2021
On Thu, 3 Jun 2021, Travis Cardwell via Haskell-Cafe wrote:
> I am happy to announce the 1.0 release of TTC (Textual Type Classes).
> The library provides the following functionality:
> * The Textual type class is used to convert between common textual data
> types. It can be used to write functions that accept or return values
> of any of these textual data types.
> * The Render type class is used to render a value as text. Avoid bugs
> by only using Show for debugging/development purposes.
That is, your class is intended for text representation for program users
(instead of programmers)?
I think a notable difference between Show (which is for programmers) and a
human readable text formatter should be a control of formatting details.
Currently 'printf' is the way to format human readable text and you can
control formatting of numbers e.g. by "%d", "%3d", "%03d" etc. It's not
type safe but better than Show.
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