[Haskell-cafe] Re: String vs ByteString

Don Stewart dons at galois.com
Fri Aug 13 16:39:23 EDT 2010


There are many libraries for many purposes.

    How to pick your string library in Haskell
    http://blog.ezyang.com/2010/08/strings-in-haskell/

kevinjardine:
> I find it disturbing that a modern programming language like Haskell
> still apparently forces you to choose between a representation for
> "mostly ASCII text" and Unicode.
> 
> Surely efficient Unicode text should always be the default? And if the
> Unicode format used by the Text library is not efficient enough then
> can't that be fixed?
> 
> Cheers,
> Kevin
> 
> On Aug 13, 10:28 pm, Ketil Malde <ke... at malde.org> wrote:
> > Johan Tibell <johan.tib... at gmail.com> writes:
> > > Here's a rule of thumb: If you have binary data, use Data.ByteString. If you
> > > have text, use Data.Text.
> >
> > If you have a large amount of mostly ASCII text, use ByteString, since
> > Data.Text uses twice the storage.  Also, ByteString might make more
> > sense if the data is in a byte-oriented encoding, and the cost of
> > encoding and decoding utf-16 would be significant.
> >
> > -k
> > --
> > If I haven't seen further, it is by standing in the footprints of giants
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