On 3/21/18 5:59 AM, berni wrote:
I need code, that generates a copy of a twodimensional array.
What I do is:
auto tmp = new int[][](X,X);
foreach (i; 0..X) tmp[i] = solution[i].dup;
solutions ~= tmp;
because solutions ~= solution.dup obviously doesn't work (the refs are
copied, not the elements of the inner arrays).
Is there a better solution without this extraneous tmp variable? Im
thinking of something like
solutions ~= solution.nice_phobos_function_id_dont_know.dup;
or something similar?
I don't think there is, but you could potentially use map and array:
import std.algorithm: map;
import std.array: array;
solutions ~= tmp
.map!(a => a.dup) // every access to an element dups it first
.array; // build an array out of the result
I'm not 100% sure array only calls front once per element, but I'm
pretty sure.
On 3/21/18 6:01 AM, berni wrote:
> Oops, sorry. I just have seen, that I posted in the wrong forum, should
> have been in "New users Learn". Is it possible to move this post over?
Sorry, posts can't be moved, but no big deal :)
-Steve
