On Dec 21, 2008, at 8:52 AM, Martijn van Steenbergen wrote:
Hello all,
Data.Ord has a handy function called comparing, and its
documentation shows an example of its use.
But what if you want to sort a list of values based on multiple
criteria? It turns out there is a neat way to do this:
On Sun, Dec 21, 2008 at 9:20 AM, Jan-Willem Maessen
wrote:
> Indeed, this is great to know. I can't help but notice that there is no
> documentation of any kind at all for the Monoid instance of Ordering; how
> were we supposed to know this behavior existed in the first place, except by
> hunting
On Sun, Dec 21, 2008 at 11:20 AM, Jan-Willem Maessen
wrote:
> On Dec 21, 2008, at 8:52 AM, Martijn van Steenbergen wrote:
>
>> Hello all,
>>
>> Data.Ord has a handy function called comparing, and its documentation
>> shows an example of its use.
>>
>> But what if you want to sort a list of values
David Menendez schrieb:
> On Sun, Dec 21, 2008 at 11:20 AM, Jan-Willem Maessen
> wrote:
>> On Dec 21, 2008, at 8:52 AM, Martijn van Steenbergen wrote:
>>
>>> Hello all,
>>>
>>> Data.Ord has a handy function called comparing, and its documentation
>>> shows an example of its use.
>>>
>>> But what i
David Menendez wrote:
This is a great example of why it's a bad idea to introduce new
functionality with a Monoid instance. Even if you know the instance
exists, mappend is so general that it's difficult or impossible to
predict what it will do at a given type.
There should be an explicit functi
