[Haskell-cafe] Please critique my code (a simple lexer)

Taylor Hedberg t at tmh.cc
Tue May 22 17:36:26 CEST 2012

John Simon, Tue 2012-05-22 @ 10:13:07-0500:
> - My `consume` function seems basic enough that it should be library
> code, but my searches turned up empty. Did I miss anything?

    consume = span . flip elem

> - Is creating data structures with simple field names like `kind`,
> `offset`, etc a good practice? Since the names are global functions, I
> worry about namespace pollution, or stomping on functions defined
> elsewhere.

If you don't intend your module to be imported and used as a library,
then there's no reason to worry about this. If you do intend it to be
used that way, then it's probably still not worth worrying about, as
name clashes can be resolved at the import level via qualified imports
or `hiding` lists. If it ends up really being a problem, you can always
add a namespace prefix to those names, though honestly I find that kind
of ugly.

The compiler will always catch cases of ambiguity caused by multiple
definitions of the same name being in scope, so you don't have to worry
about this causing inadvertent runtime bugs.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 836 bytes
Desc: Digital signature
URL: <http://www.haskell.org/pipermail/haskell-cafe/attachments/20120522/ee7e7482/attachment.pgp>

More information about the Haskell-Cafe mailing list