bearophile wrote:
> Denis Koroskin:
>
>> I don't see any reason why if (someComplexNumber) { ... } should be a
> valid code, it hardly makes any sense for me.<
>
> In general I think adding a boolean-evaluation standard method to D can be
> positive and handy and not that bug-prone.
> But complex numbers are FP, so you usually test if they are close to zero
> (test of exactly zero can be useful to know if a value was not changed, etc).
> So I agree with you that for complex numbers such boolarn-eveluation method
> isn't very useful.
> Once D has such operator, it can be defined for library complex numbers too,
> but probably it will not be used often.
> It's useful if you want to write generic code, so if in a templated function
> you use if(x){... it will work with integers, double, complex values, etc,
> without special casing.
>
I'm not buying that. What kind of function would that be? I can't imagine a
need for this.
