[your code here]

[Timon Gehr]

On 28.04.21 15:21, drug wrote:
> 28.04.2021 15:34, Paul Backus пишет:
>> On Wednesday, 28 April 2021 at 07:56:50 UTC, drug wrote:
>>> ```D
>>>         .map!((a)=>(gcd(a[0], a[1]) == 1) ? 1 : 0)
>>>         .sum(0);
>>> ```
>>
>> Alternatively:
>>
>> ```d
>> .filter!(pair => gcd(pair[0], pair[1]) == 1)
>> .count;
>> ```
> 
> it's better alternative!


```d
.count!(pair => gcd(pair[0], pair[1]) == 1);
```