UFCS confusion

[Michael]

On Friday, 13 July 2018 at 11:17:32 UTC, Radu wrote:
> On Friday, 13 July 2018 at 11:12:47 UTC, Michael wrote:
>> On Friday, 13 July 2018 at 10:52:54 UTC, Radu wrote:
>>> On Friday, 13 July 2018 at 10:21:54 UTC, Michael wrote:
>>>> [...]
>>>
>>> Do you try to call member functions? UFCS only works with 
>>> free functions, meaning declared at module level.
>>>
>>> https://dlang.org/spec/function.html#pseudo-member
>>
>> I'm not intentionally trying to call member functions, no. The 
>> functions are all static functions of a class, but the 
>> chaining of them using UFCS doesn't seem to work.
>
> OK, static functions of a class are static *member* functions, 
> they are not free functions.

Oh, really? Well that will explain it then. I was sure I had used 
this syntax before but perhaps not. Thanks for your help!