Modern C++ Lamentations

[Steven Schveighoffer]

On 1/4/19 9:00 AM, Dukc wrote:
> On Monday, 31 December 2018 at 13:20:35 UTC, Atila Neves wrote:
>> Blog:
>>
>> https://atilanevesoncode.wordpress.com/2018/12/31/comparing-pythagorean-triples-in-c-d-and-rust/ 
>>
> 
> Isn't the main problem with performance of the Timon's range loop that 
> it uses arbitrary-sized integers (BigInts)?

Atila's version of that code doesn't use bigints: 
https://github.com/atilaneves/pythagoras/blob/master/range.d#L24

The major problem with the D range implementation is that the compiler 
isn't able to find the optimization of hoisting the multiplication of 
the outer indexes out of the inner loop.

See my responses to Atila in this thread.

-Steve