Advertisements I’m fairly new and trying to understand maps in javascript. I have below code. const topmap = new Map(); const map1 = new Map(); const map2 = new Map(); const set1 = new Set(); map1.set(‘x’,’y’); map1.set(‘a’,’b’); set1.add(map1); set1.add(map2); topmap.set(‘ID’,set1); console.log(topmap.get(‘ID’).size); topmap.get(‘ID’).forEach(x => { if(x.has(‘x’)){x.delete(‘x’)} ) } ) console.log(topmap.get(‘ID’).size) Anyone has any idea why both… Read More list of map nested in a set

Advertisements viewed some other forums to see if I could find an answer to this but I didn’t find anything satisfactory. I’m writing a program to work out the fibonacci sequence up to a specified index, but I keep getting an error. allNums = {1, 1} while len(allNums) < 35: currentIndex = len(allNums) nextIndex =… Read More TypeError: 'set' object is not callable [PYTHON]

Advertisements ** Update: This was a typo on my part, but I was struggling with the issue all morning. Sometimes something this obvious can elude you even if it is right in your face. I have solved a question on LeetCode and I was trying to run the same solution that I had developed for… Read More Difference in python execution on LeetCode and locally

Advertisements I am confused to no end. The code that seems to have to work the same – works different. An explanation would be nice. The following code: public int Pages { get { return _pages; } set { if (value < 1) { _pages = 1; } else { } _pages = value; }… Read More Getters Setters

Advertisements All my life I believed, Set will replace the existing Value when inserting new Value to maintain it’s unique property. But today I am surprised that it’s not, Code: enum Action { case edit case delete case update } struct Object: Equatable, Hashable { let id: String let action: Action let code: UInt8 var… Read More Set is keeping old object even after the new insertion

Advertisements I’ve seen the below "code1" used for checking for most frequently used characters in a string where each character is first checked for uniqueness rather than simply converting the string to a set (as in "code2"). Is the "code1" method preferred due to the slight performance improvement? And why is converting a string to… Read More Checking for unique elements in a string vs. converting string to a set

Advertisements If my set::find() function works as expected in some scenarios and does not work in others. Since I am storing object pointers in my set I have defined a functor for comparison as below: template<class T> struct ptr_compare { bool operator()(const T* lhs, const T* rhs) const { return *lhs < *rhs; } };… Read More Set::find() not working as expected with objects stored as pointer and comparison functor defined