Object arrays in D

[simendsjo]

On Tue, 10 Apr 2012 12:01:10 +0200, CrudOMatic <crudomatic at gmail.com>  
wrote:

> Awesome. One last question, does popFront() have the same effect of  
> decreasing length - or should I avoid popFront()?

popFront will also reduce the length, but it will slice away the first  
item. Read the article I linked earlier.
This means that if you append to the array, the array will keep expanding  
and eventually relocate as you cannot reuse the front of the array without  
doing some manual work.
It sounds to me like you want popBack and assumeSafeAppend.

This is basically what popBack and popFront from std.array looks like:

void popBack(A)(ref A a)
{
     a = a[0 .. $ - 1]; // $ is a.length
}

void popFront(A)(ref A a)
{
     a = a[1 .. $];
}