------- Forwarded message ------- From: "Cristian Baboi" To: "Yitzchak Gale" Cc: Subject: Re: [Haskell-cafe] Wikipedia on first-class object Date: Thu, 27 Dec 2007 12:21:44 +0200 I think I found the answer to why functions cannot be written to files. This is by design. Haskell must be free. Enabling writing functions to files, might make it ilegal in some countries. :-) On Thu, 27 Dec 2007 11:10:21 +0200, Yitzchak Gale wrote:

Like any type, only certain operations make sense on functions. Strings can be compared to each other for equality and written to a disk, and you can take the logarithm of a float, but none of those operations make sense for functions. In particular, two functions are equal only if they produce the same value for every input, and in general it is impossible for a computer to check that.

-Yitz

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