Re: Fastest Way to Append Multiple Elements to an Array

[Nordlöw]

On Monday, 15 December 2014 at 15:55:22 UTC, Steven Schveighoffer 
wrote:
What's the fastest way to append multiple elements to an 
array?:

Before appending, call reserve to avoid the possibility of 
reallocating multiple times:

arr.reserve(arr.length + n); // about to append n elements.

Thanks!


Either

    arr ~= e1;
    arr ~= e2;
    arr ~= e3;

or

    arr ~= [e1,e2,e3];

I wish this would be fastest, but it's not, because this 
allocates an array on the heap with elements e1, e2, e3 before 
appending. It would be a superb addition to D if this would 
simply allocate a stack array (if the array never escapes the 
expression).

That's what I thought :)