Recently I encountered the following problem.
I need a simple stack of uint.
I want to push uints back and pop it. I don't want to copy this
stack and I want it to work fast.
In a first approximation, the problem seems easy.
uint[] my_stack;
my_stack.reserve(256);
my_stack ~= 1; //push
uint head = my_stack[$ - 1]; //top
my_stack.length--; //pop
my_stack ~= 2; //push
However, when I changes the length and append new elem to the
array after it, array is reallocated.
Ok, good point. Seems reasonable. I might create slice of array
copy before changing of the length. And by default changing array
length or creating slice should cause an array reallocation at
appending.
However I don't plan to copy or creating slices of this array,
thus I need to some magic for avoid reallocation.
I've found a GC.BlkAttr.APPENDABLE flag at core.memory.
How ever it hasn't helped me.
Is there another way to do it without manually managing of memory?
