On 09.04.2016 18:13, Uranuz wrote:
http://dpaste.dzfl.pl/523781df67ab
For reference, the code:
----
import std.stdio;
void main()
{
string[][string] mapka;
string[]* mapElem = "item" in mapka; //Checking if I have item
if( !mapElem )
mapElem = &( mapka["item"] = [] ); //Creating empty element
inside map
writeln( (*mapElem).capacity );
//Appending should reallocate, so pointer to array should change
*mapElem ~= ["dog", "cat", "horse", "penguin", "fish", "frog"];
//But AA still somehow knows the right pointer
writeln(mapka);
//It works, but I dont understand why?
}
----
mapElem is not a pointer to the elements of the array. It's a pointer to
the dynamic array structure which holds the pointer to the data and the
length. That means, the reallocation doesn't change mapElem. It changes
(*mapElem).ptr.
