On Monday, 18 May 2015 at 17:14:46 UTC, Steven Schveighoffer
wrote:
capacity is analogous to the number of elements in the vector
(as returned by array-dimension according to
https://www.cs.cmu.edu/Groups/AI/html/cltl/clm/node162.html).
arr.length is analogous to the fill pointer.
example:
int[] arr = new int[](5);
assert(arr.capacity > 5);
assert(arr.length == 5);
arr.reserve(100); // expand arr memory block to be able to hold
*at least* 100 ints
assert(arr.capacity >= 100);
assert(arr.length == 5);
auto ptr = arr.ptr; // for later assert
arr ~= 1; // increment length by 1, 'fill in' tail of array
with '1'
// this should demonstrate how it works
assert(arr.length == 6); // new fill pointer
assert(arr.capacity >= 100); // capacity unchanged
assert(arr.ptr is ptr); // array still lives in same memory
block
Apologies for not translating to lisp, I don't know it.
-Steve
Thank you. This is what you need!
