On Sunday, 20 October 2013 at 16:33:35 UTC, Walter Bright wrote:
On 10/20/2013 7:25 AM, bearophile wrote:
More discussions about variable-sized stack-allocated arrays
in C++, it seems
there is no yet a consensus:
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3810.pdf
I'd like variable-sized stack-allocated arrays in D.
They're far more trouble than they're worth.
Just use:
auto a = new T[n];
Stack allocated arrays are far more trouble than they're worth.
But what about efficiency? Here's what I often do something
along the lines of:
T[10] tmp;
T[] a;
if (n <= 10)
a = tmp[0..n];
else
a = new T[n];
scope (exit) if (a != tmp) delete a;
The size of the static array is selected so the dynamic
allocation is almost never necessary.
But delete is deprecated. ;)
