On 10/24/07, Neil Mitchell <[EMAIL PROTECTED]> wrote: > Hi > > > > Are there binary constants in Haskell, as > > > we have, for instance, 0o232 for octal and > > > 0xD29A for hexadecimal? > > > > No, though it is an interesting idea. > > You can get pretty close with existing Haskell though: > > (bin 100010011) > > where bin :: Integer -> Integer, and is left as an exercise for the > reader. Obviously its not as high performance, as proper binary > literals, but if you write them as top-level constants, they'll only > be computed once and shouldn't end up being in the performance > critical bits. > To make it efficient you could use Template Haskell and have the bin function generate the constant which could then be spliced in. I suppose it would look something like: $(bin 100010011)
Not too bad. /Josef _______________________________________________ Haskell-Cafe mailing list [email protected] http://www.haskell.org/mailman/listinfo/haskell-cafe
