On 10/07/2017 07:55 PM, Balagopal Komarath wrote:
I was implement my own range type that forwards all accesses to
another range. I tried to write a `swap` function so that sort etc.
could be called on my range. However, I cannot get
`hasSwappableElements!ARange` to evaluate to true. But, when I copy
pasted the definition of `hasSwappableElements` into my module and
evaluated it, it was true. I assume this is something to do with how
name lookup works in D. Here's simplified code that reproduces the same
problem.
https://dpaste.dzfl.pl/48a420cce261
You can't provide your own swap function. `sort` etc. use
std.algorithm.swap, so your range has to work with that.