[Haskell-cafe] Re: Why 'round' does not just round numbers ?

Daniel Fischer wrote:

Am Montag, 27. Oktober 2008 12:35 schrieb Achim Schneider:

...

Daniel Fischer wrote:

...

Am Montag, 27. Oktober 2008 11:46 schrieb Henning Thielemann:

...

I also know a didact which tells teachers that 1 has no prime decomposition. Oh, I see, she may have copied that from Wikipedia: http://en.wikipedia.org/wiki/Prime_factorisation

I can believe that makes sense to somebody who considers 0 an unnatural number, an empty product must be frightening for them.

That is just mathematical trickery and dodgery, silently defining 1 as prime by including it (even infinitely many times!) in any prime factor,

Who does such horrible things? Repeat after me: 1 is NOT a prime. Never, under no circumstances.

Then chase it out of your prime factor products. You'd be the first one to break a monoid and locate unsafeCalculate#. -- (c) this sig last receiving data processing entity. Inspect headers for copyright history. All rights reserved. Copying, hiring, renting, performance and/or quoting of this signature prohibited.