This code fails to compile
```
auto a = [1, 2, 3, 4, 5, 1, 2, 3, 4, 5];
a.filter!(x => x > 2).sort!((x, y) => x > y).writeln;
```
because you can't sort over filter result. Adding `.array` before `.sort` "fixes" the problem. Probably, it should work without the `array` inbetween
Comment #1 by nick — 2023-07-18T17:16:16Z
filter returns an input range.
sort requires a random access range and works in place and has good time complexity.
How do you want to sort an input range?
Comment #2 by dfj1esp02 — 2023-07-18T18:54:33Z
It would do inputRange.array.sort!predicate, that's how sort usually works on input ranges.
Comment #3 by grimmaple95 — 2023-07-18T19:23:35Z
(In reply to Nick Treleaven from comment #1)
> filter returns an input range.
> sort requires a random access range and works in place and has good time
> complexity.
> How do you want to sort an input range?
As a user, I shouldn't care about what `filter` returns. I should care about getting a filtered & sorted array/range.
As for `sort`, in my user opinion, if it can't do its job "in place", then it could as much do it out-of-place, because this code
```
auto a = [1, 2, 3, 4, 5, 1, 2, 3, 4, 5];
a.sort!((x, y) => x > y).writeln;
```
fails to compile just as much, and it's staright up inconvenient
Comment #4 by grimmaple95 — 2023-07-19T07:20:32Z
(In reply to Grim Maple from comment #3)
> (In reply to Nick Treleaven from comment #1)
> > filter returns an input range.
> > sort requires a random access range and works in place and has good time
> > complexity.
> > How do you want to sort an input range?
>
> As a user, I shouldn't care about what `filter` returns. I should care about
> getting a filtered & sorted array/range.
>
> As for `sort`, in my user opinion, if it can't do its job "in place", then
> it could as much do it out-of-place, because this code
>
> ```
> auto a = [1, 2, 3, 4, 5, 1, 2, 3, 4, 5];
> a.sort!((x, y) => x > y).writeln;
> ```
>
> fails to compile just as much, and it's staright up inconvenient
I meant to change `auto a` to `immutable a`. Then it won't compile, but should
Comment #5 by robert.schadek — 2024-12-01T16:41:34Z