Advertisements I was just trying to create a 2D array in Dart as follows: List<List<int>> data = List.filled(7, List.filled(15, 0)); data[1][0] = 5; for (int i = 0; i< 7; i++) { print(‘Index $i: ${data[i]}’); } Expected result would be: Index 0: [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,… Read More Dart List consisting of Lists (i.e. 2d array) weirdly linked
Advertisements I have been working on a Sudoku game using React.js. I have a function that will be used to generate a grid and then create a copy of the grid with a specified number of spaces set to ” rather than a number, based on the provided difficulty. However, when running the code, initial… Read More Javascript 2d-array unexplainably overwritten (React.js)
Advertisements Goal: Transform a array that has N number of nested lists, into a 1D array using Python3. Example Array: ND_array = [1, [2, 3], [4, [5, 6]], 7, [8, 9, [10, 11, 12, [13, [14, 15, 16], 17], 18], 19, 20], 21] Transform the example array into the following result: [1, 2, 3, 4,… Read More Flatten a N-Dimensional Array into a 1D Array in Python
Advertisements I have two multi-dimensional arrays and need to sort the first array in the same order as the second array based on different keys (but their values are the same). In the below example I need $allOptions to be sorted into the same order as $regOptions but based on the values of clID ==… Read More php sort array by sort order of another array
Advertisements I have this array : data = { "lists": { "list-1": { "id": "list-1", "title": "list1", "cards": [ { "id": "20", "title": "title" }, { "id": "2", "title": "title" } ] }, "list-2": { "id": "list-2", "title": "list2", "cards": [ { "id": "4", "title": "title" }, { "id": "3", "title": "title" } ] }… Read More Find the highest number with same key from a multi dimensional array
Advertisements How would you extract every value of a key regardless of how deep or shallow it is in an array. Here is a sample JSON array. I want to grab every occurrence of "content" and concatenate them into a single string. { "foo": [ "content": "hi", "inner": [] ], "bar": [ "content": "hi2", "inner":… Read More PHP Get the value of every occurrence of a key in a multidimensional array
Advertisements i need some help to change multi-dimentional array of this data : const dataArr: any[] = [ { id: 1, orders: [{ id: 1, order_name: "john Doe" }], product: { id: 1, name: "Plate", price: "7", }, location: { id: 30475986, name: "store_1", }, serial_no: "223311", qty: 1, }, { id: 2, orders: [{… Read More Javascript multi-dimentional array
Advertisements How can I apply a function over last two dimensions? E.g. I generated an array below of (2,3,3) dimensions, the resulting array should have the same dimenstions where the function is apply to a[0,:,:] and a[1,:,:]. I understand I can go with a for loop, but might there be an in-built function specially for… Read More Apply a function over last two dimensions
Advertisements Typical noob disclaimer goes here 😉 I am trying to nest an array in a Swift dictionary similar to how you would with JSON. My nested array ("blocks" in the code below) has mixed datatypes in it. When I run my For-in loop on it, I get the error For-in loop requires ‘Any’ to… Read More Looping through Arrays in Dictionaries
Advertisements I have two numpy arrays x and y with shapes (m,n,p) and m respectively. For all indices i between 0 and m-1, I want to multiply every element in the block x[i,:,:] by y[i]. How can I achieve this in a single line? Related question: How to multiply numpy 1D with N-D array? >Solution… Read More Multiplying n-D and 1-D numpy arrays along common dimension