D for project in computational chemistry

[John Colvin via Digitalmars-d]

On Tuesday, 4 August 2015 at 18:56:20 UTC, jmh530 wrote:
> On Tuesday, 4 August 2015 at 09:48:07 UTC, Chris wrote:
>> I agree with bachmeier. You cannot go wrong. You mentioned 
>> nested loops. D allows you to concatenate (or "pipe") loops. 
>> So instead of
>>
>> foreach
>> {
>>   foreach
>>   {
>>     foreach
>>     {
>>     }
>>   }
>> }
>>
>> you have something like
>>
>> int[] numbers = [-2, 1, 6, -3, 10];
>> foreach (ref n; numbers
>>   .map!(a => a * 5)  // multiply each value by 5
>>   .filter!(a => a > 0))  // filter values that are 0 or less
>> {
>>   //  Do something
>> }
>>
>
> I don't think I had seen an example like this before (though it 
> is obvious in retrospect). Is there any advantage in terms of 
> performance?

ldc and gdc can often achieve parity with explicit loops.