Using algorithms with ranges

[mipri]

On Thursday, 3 October 2019 at 08:52:22 UTC, Andrea Fontana wrote:
> On Thursday, 3 October 2019 at 05:33:04 UTC, mipri wrote:
>> void main() {
>>     import std.range : iota;
>>
>>     foreach (x; iota(1, 10).withHistory)
>>         writeln(x);
>> }
>
>
> This doesn't work as expected, I think.
>
> auto r = iota(1,10).withHistory;
>
> writeln(r.front);
> writeln(r.front);

Oops. That output should be the same, since popFront hasn't been 
called.

The code's also bad for preserving the entire history when only 
the
latest is needed for what it's doing.