[Haskell-cafe] some ideas for Haskell', from Python

Immanuel Litzroth immanuel203 at gmail.com
Thu Jan 15 06:52:05 EST 2009

> 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)
In Python importing a module has totally different semantics from importing
in Haskell.
I runs the initialization code for the module & makes the names in that
available to you code. In Haskell modules are just namespace control, and
you can always
refer to names imported through import X through the syntax X.name.
This means that the local import in Python solves two problems
1) making a name available locally.
2) running initialization code only when a specific function is called.
Neither of those makes any sense for Haskell as far as I can tell.
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