Re: [Haskell-beginners] Simple function comparison

Awesome video, I watched it about ten times in a row and so many pennies dropped. On 25 November 2015 at 16:35, Stephen Renehan wrote:

Hi Matthew,

Was just about to reply that I only have the process written in long hand from the video that I enclose but I see Francesco beat me to it with a more concise explanation. Thanks again Francesco :)

https://www.youtube.com/watch?v=ZhuHCtR3xq8

On 25 November 2015 at 15:48, MJ Williams wrote:

...

[snip]

...

I don't think there is a way to /prove/ f (g a) == g (f a) if their domain is not finite inside Haskell (you could do it with pen and paper).

[snip] Just out of interest, could you demonstrate the proof without a finite domain?

Sincerely, Matthew

_______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners

--

This email originated from DIT. If you received this email in error, please delete it from your system. Please note that if you are not the named addressee, disclosing, copying, distributing or taking any action based on the contents of this email or attachments is prohibited. www.dit.ie

Is ó ITBÁC a tháinig an ríomhphost seo. Má fuair tú an ríomhphost seo trí earráid, scrios de do chóras é le do thoil. Tabhair ar aird, mura tú an seolaí ainmnithe, go bhfuil dianchosc ar aon nochtadh, aon chóipeáil, aon dáileadh nó ar aon ghníomh a dhéanfar bunaithe ar an ábhar atá sa ríomhphost nó sna hiatáin seo. www.dit.ie

Tá ITBÁC ag aistriú go Gráinseach Ghormáin – DIT is on the move to Grangegorman http://www.dit.ie/grangegorman _______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners