[Haskell-cafe] Re: Weird ghci behaviour?

Radosław Grzanka radoslawg at gmail.com
Tue Nov 13 13:38:59 EST 2007

2007/11/13, Simon Peyton-Jones <simonpj at microsoft.com>:
> | "For technical reasons, GHCi can only support the *-form for modules
> | which are interpreted, so compiled modules and package modules can
> | only contribute their exports to the current scope." But it does mean
> | the interpreter isn't referentially transparent, which is weird for a
> | language that puts so much stress on referential transparency.
> Well it depends on what you mean by "referential transparency" -- but I'll agree 100% that the behaviour you described in your original message is surprising, and therefore unwelcome.

Plus, I just discovered, by reading this thread, WHY this happen.

> Meanwhile, though, the best we can do is improve the documentation:
>         Dan, can you suggest any words we could add to the
>         documentation that would have prevented you stumbling?

Granted, I'm lazy. I read release notes only and only few first pages
to see what's new. Couldn't GHCI be improved to at least give some


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