Complex numbers are harder to use than in C

[Marduk via Digitalmars-d-learn]

On Saturday, 19 November 2016 at 16:17:08 UTC, Meta wrote:
> On Saturday, 19 November 2016 at 09:38:38 UTC, Marduk wrote:
>> Dear all,
>>
>> I just discovered D and I am translating some numerical code I 
>> wrote in C. I was surprised to learn that there are at least 
>> two things that are easier in C than in D:
>>
>> + Writing complex numbers
>>
>> C: complex double z = 2.0 + 3.0*I;
>>
>> D: auto z = complex(2.0, 3.0);
>>
>>
>> + Arrays of complex numbers
>>
>> C: complex double a[2][2] = {{1.0*I, 0.0}, {0.0, 1.0*I}};
>>
>> D: Complex!double[2][2] a = [[complex(0.0, 1.0), 
>> complex(0.0)], [complex(0.0), complex(0.0, 1.0)]];
>>
>> The difference is that D is more verbose. Am I missing 
>> something? Can we have C's behaviour in D?
>
> D used to support complex numbers in the language (actually it 
> still does, they're just deprecated). This code should compile 
> with any D compiler:
>
> cdouble[2][2] a = [[0 + 1i, 0], [0, 0 + 1i]];

Thank you! However, I am concerned that if this is deprecated, 
then I should not use it (it is not future-proof). I wonder why D 
dropped this syntax for complex numbers. It is very handy.