Base* p = new Base[n] creates an n-sized array of Base elements, of which p then points to the first element. Base* p = new Derived[n] however, creates an n-sized array of Derived elements. p then points to the Base subobject of the first element. p does not however refer to the first element of … Read more
Look at java.util.LinkedList or java.util.ArrayList List<Integer> x = new ArrayList<Integer>(); x.add(1); x.add(2);
There may be a better approach, but here is one using TEXTJOIN and FILTERXML to create an array that you can call UNIQUE on: =SORT(UNIQUE(FILTERXML(“<t><s>”&TEXTJOIN(“</s><s>”,TRUE,A1:C6)&”</s></t>”,”//s”)))
I remember reading many years ago why 1.5 is preferred over two, at least as applied to C++ (this probably doesn’t apply to managed languages, where the runtime system can relocate objects at will). The reasoning is this: Say you start with a 16-byte allocation. When you need more, you allocate 32 bytes, then free … Read more
Why does the compiler accept that declaration? Because its authors chose to make it do so. GCC in particular allows, by default, a lot of non-standard stuff that was historically accepted by old C compilers. They like “compatibility” in that sense. What does the standard say about [it]? Precisely what the warning states it says … Read more
I can use pointers, but I am a bit afraid of using them. If you need a dynamic array, you can’t escape pointers. Why are you afraid though? They won’t bite (as long as you’re careful, that is). There’s no built-in dynamic array in C, you’ll just have to write one yourself. In C++, you … Read more
Good question, and I looked it up… In short: Use =Cells(x,y).Formula2 instead of =Cells(x,y).Formula Explaination: The @ that shows is called the implicit intersection operator. From MS docs: Implicit intersection logic reduces many values to a single value. Excel did this to force a formula to return a single value, since a cell could only … Read more
In order to answer the question, we should first clear up some concepts. What is an array and how can it be used? And what is the code in the question, if not an array? What is an array? The formal definition of an array is found in the C standard, ISO 9899:2011 6.2.5/20 Types. … Read more
The difference exists due to the existence of references in C++. In C++ operator >> for objects of type int is declared the following way basic_istream<charT,traits>& operator>>(int& n); As you see the parameter of the operator has type int &. It means that the argument is passed to the function by reference that is the … Read more
Kindly dont make a habit of asking for free code. let arr = [1,2,3,4,5,6,7,8,9]; for(i=0;i<arr.length;i++) { let a = arr[i]; let b = a + 5; if(arr.indexOf(b)!= -1) { let tdtag1 = document.createElement(“td”); let tdtag2 = document.createElement(“td”); let trtag = document.createElement(“tr”); let trText1 = document.createTextNode(a); tdtag1.appendChild(trText1); let trText2 = document.createTextNode(b); tdtag2.appendChild(trText2); trtag.appendChild(tdtag1); trtag.appendChild(tdtag2); document.getElementById(“myTable”).appendChild(trtag); } … Read more