push
	static
		if space l[size++] = d
	dynamic || naive
		if !space realloc
		if space l[size++] = d

		push_i
	static
		no sneed
	dynamic || naive
		if !space realloc move
		l[i] = d, size++

		pop
	static
		l[size--] = {0}
	dynamic || naive
		l[size--] = {0}
		if space < limit realloc