I want to initialize a React state as an empty Set in Typescript, and then add/remove values. If I wanted to use an array, I would do this: const [products, setProducts] = React.useState<String[]>([]) // And then to change it: setProducts([…products, "new product"]) But I want to use a Set, so every value has to be… Read More How to use a Set data structure as a state in React Typescript?

I am not sure what I am missing from my function here to remove elements in a a set. It seems the loop is not working as expected. If you have a more optimal solution O(1), please share. Thanks! const dupArr = ["a", "b", "c", "d", "d",’dog’] function transformSearchFields(fields) { let noDupes = new Set(fields)… Read More Iterate over set and remove element if it is in another set and return array

I’m relatively new to c++, and trying to understand why my following code is recieving segmentation fault: #include <iostream> #include <set> using namespace std; set<int> S; int main(){ S.insert(1); auto it = S.lower_bound(1); cout << *it << endl; cout << (it– == S.begin()) << endl; } Correct me if I’m wrong, but doesn’t c++ allow… Read More C++ Segmentation_Fault With Set

I have used the set() function but I am confused. x = set("car") print(x) Why does this code output: "a", "c", "r" and not "car"? Thanks for your answers. >Solution : It’s because of the main properties of set in Python. They can’t contain duplicates They’re unordered So things like this one just happen. >>>… Read More set() in Python

Have got a set() like item = {‘Apple’,’Lemon’} and a string flow=’Mango’ need to combine both to form a list like below result = [‘Mango’,’Apple’,’Lemon’] tried the code result = [flow ,item] which doesn’t work out. Help me through this. Thanks! >Solution : You can unpack the set into a new list that includes flow:… Read More How to combine elements in set and a string to a list in python?

My question is quite simple. When I run someSet = {1,2,3,4} someSet.discard([5]) It gives the error: Traceback (most recent call last): File "File.py", line 2, in <module> someSet.discard([5]) TypeError: unhashable type: ‘list’ Just like list, sets are also unhashable and can’t be stored in a set. So, I expect the following code to generate an… Read More Why set.discard doesn't throw an error when a set is passed to it in Python?

I want to find in binary buffer (bytes) all the "words" build from ascii lowercase and digits that only 5 chars length. For example: bytes(b’a\x1109ertx01\x03a54bb\x05′) contains a54bb and 09ert . Note the string abcdef121212 is larger than 5 chars so I don’t want it I have build that set set([ord(i) for i in string.ascii_lowercase +… Read More Find all words in binary buffer using Python

I’ve been trying to figure out why this function is returning None every time I run it, I would appreciate a lot if someone could explain my why. x = set([1,2,3]) def inserta(multiconjunto, elemento): a = multiconjunto.add(elemento) return a mc1 = inserta(x, 2) print(mc1) >Solution : It returns none because set.add() returns None, the add()… Read More Can someone explain why this function returns None?

I would like to know how it is possible to extract the 4 keys from a dictionary with the highest values, and store these as a set. My dictionary looks like this: my_dict = {Suzanne: 6, Peter: 9, Henry: 2, Paula: 275, Fritz: 1, Anita: 80}. (The desired output in this case would be the… Read More How to find the (n) keys with the highest values in a dictionary and store these in a set?