Creates a stack structure. A stack is a LIFO (last in, first out) vector (array) of items. It has O(1) insertion and O(1) removal.

Returns the blocksize the stack was created with.

Checks if a stack is empty.

Pops a value off a stack, ignoring it completely.

Pops an array of cells from a stack.

Pops a cell value from a stack.

Pops a string value from a stack.

Pushes a copy of an array of cells onto the end of a stack. The cells are pushed as a block (i.e. the entire array takes up one stack slot), rather than pushing each cell individually.

Pushes a value onto the end of the stack, adding a new index.

Pushes a copy of a string onto the end of a stack, truncating it if it is too big.