Proposal: add new Data.Bits.Bits(bitZero) method

[Carter Schonwald]

Zero is a big bit of name space.  Id favor zerobits over zero.

On Saturday, February 22, 2014, Herbert Valerio Riedel <hvr at gnu.org> wrote:

> Hello *,
>
> Here's a mid-discussion summary of the proposal
>
> >> Introduce a new class method
> >>
> >>   class Bits a where
> >>       ...
> >>       -- | Value with all bits cleared
> >>       <0-value-method> :: a
> >>       ...
> >>
> >> modulo naming of '<0-value-method>'
>
> from my point of view:
>
>  - The idea came up already in 2011 when Num-superclass was to be removed
> from Bits
>    (but discussion derailed)
>
>  - So far general consensus (i.e. no "-1"s afaics) it's desired to have
>    an all-bits-clear value introducing method in 'Bits'
>
>  - Use "clearBit (bit 0) 0" as default implementation for smooth
> upgrade-path
>
>  - Nameing for <0-value-method> boils down to two candidates:
>
>     a) 'Data.Bits.zero'
>
>         - based on the idea tha 'Data.Bits' ought to be imported
>           qualified (or with explicit import-list) anyway
>           (-> thus following PVP practice)
>
>         - many existing Data.Bits.Bits methods such as 'rotate',
>           'complement', 'popCount', 'xor', or 'shift' don't have
>           the name 'bit' in it (and those few that have, operate
>           on single bits)
>
>         - supporters (in no particular order):
>
>            - ARJANEN Loïc Jean David
>            - Henning Thielemann
>            - Herbert Valerio Riedel (+0.99)
>            - Twan van Laarhoven
>
>     b) 'Data.Bits.zeroBits'
>
>         - more verbose name reduces risk of namespace conflicts with
> unqualified imports
>
>         - supporters (in no particular order):
>
>            - Edward Kmett
>            - Eric Mertens
>            - Herbert Valerio Riedel
>            - Twan van Laarhoven
>            - (maybe?) ARJANEN Loïc Jean David
>
>
>     So far there doesn't seem to be a very clear preference for
>     'zeroBits' over 'zero'. It might help, if those how expressed some
>     kind of support for both variants could clarify if their preference
>     has any bias towards 'zeroBits' or 'zero'.
>
>
> Cheers,
>    hvr
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