Neil Mitchell ha scritto:
Hi
1) In a Python string it is available the \U{name} escape, where name is a character name in the Unicode database.
As an example: foo = u"abc\N{VULGAR FRACTION ONE HALF}"
Hmm, looks nice, and sensible. But as soon as you've got \N{....} syntax I want:
"foo\E{show i}bar"
How this should/can work? There is Text.Printf for this.
i.e. embed expressions in strings. I think this would be fantastic.
2) In Python it is possible to import modules inside a function.
In Haskell something like:
joinPath' root name = joinPath [root, name] importing System.FilePath (joinPath)
Looks a bit ugly, but kind of useful. I'd make the syntax:
joinPath' root name = joinPath [root,name] where import System.FilePath(joinPath)
It seems a good solution.
It does mean you need to read an entire file to see what functions it imports,
Yes. That's the same with Python. I use imports inside a function only with care. Sometime they are necessary, to avoid circular import problems (but this not a problem with Haskell).
[...] Nice ideas, but they probably want implemented in a Haskell compiler and using in real life before they are ready for Haskell' like thoughts.
The first feature requires some works. As far as I know GHC does not support the Unicode database at all. It would be nice to have an Haskell interface for the CLDR (Common Locale Data Repository), like done in babel: http://babel.edgewall.org/ http://unicode.org/cldr/
Thanks
Neil
Regards Manlio Perillo