I meant to return a single element, the "earliest" one. Otherwise I would 
find using a superlative for the function name confusing.

The Decimal library could be another example. It provides a 
Decimal.compare/2 and a more semantic Decimal.min/2 and Decimal.max/2.

On Friday, October 11, 2019 at 9:01:32 AM UTC+2, Tyson Buzza wrote:
> The earliest function as proposed by Jose above is more like the sort_by 
> function than the min function. It returns a sorted list.
> On Friday, October 11, 2019 at 2:40:47 PM UTC+8, Fernando Tapia Rico wrote:
>> I would drop the `mapper` function, and have a similar interface to 
>> `Enum.min/2`: `DateTime.earliest(list_of_dates, empty_fallback // fn -> 
>> raise(...) end)`.

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