element type of the array being created
a reference to the array being shrunk
number of elements to remove (upon success the new length of arr is arr.length - delta)
true upon success, false if memory could not be reallocated. In the latter case arr[$ - delta .. $] is left with default-initialized elements.
The first two overloads throw only if the used allocator's primitives do. The overloads that involve copy initialization deallocate memory and propagate the exception if the copy operation throws.
Shrinks an array by delta elements using allocatorFor!(T[]).
If arr.length < delta, does nothing and returns false. Otherwise, destroys the last arr.length - delta elements in the array and then reallocates the array's buffer. If reallocation fails, fills the array with default-initialized data.