Efficient way to pass struct as parameter

[Marco Leise]

Am Wed, 3 Jan 2018 10:57:13 -0800
schrieb Ali Çehreli <acehreli at yahoo.com>:

> On 01/03/2018 10:40 AM, Patrick Schluter wrote:
>  > On Tuesday, 2 January 2018 at 23:27:22 UTC, H. S. Teoh wrote:  
>  >>
>  >> When it comes to optimization, there are 3 rules: profile, profile,
>  >> profile.  I used to heavily hand-"optimize" my code a lot (I come from
>  >> a strong C/C++ background -- premature optimization seems to be a
>  >> common malady among us in that crowd).  
>  >
>  > That's why I always tell that C++ is premature optimization oriented
>  > programming, aka as POOP.  
> 
> […]
>
> That's why I like producer functions that return values:
> 
> vector<int> makeInts(some param) {
>      // ...
> }
> 
> And if they can be 'pure', D allows them to be used to initialize 
> immutable variables as well. Pretty cool! :)
> 
> Ali

May I add, this is also optimal performance-wise. The result
variable will be allocated on the caller stack and the
callee writes directly to it. So even POOPs like me, do it.

-- 
Marco