jagged-arrays

问题 In the game I am making, I have a level that is created through an XML file. The level is drawn with a nested for loop. I am trying to make another nested for loop to take the position of each tile and assign it to a jagged array. I want to do this so I can make collision detection for each tile. Each tile in the picture of the example level below is 20x20 pixels, with 30x30 tiles, for a screen resolution of 600x600. The level was made with the free software Realm Factory, which lacks

问题 I've written some pwsh code "a:b;c:d;e:f".Split(";") | ForEach-Object { $_.Split(":") } # => @(a, b, c, d, e, f) but I want this // in javascript "a:b;c:d;e:f".split(";").map(str => str.split(":")) [ [ 'a', 'b' ], [ 'c', 'd' ], [ 'e', 'f' ] ] a nested array @( @(a, b), @(c, d), @(e, f), ) Why? and what should I do 回答1: Use the unary form of , , PowerShell's array-construction operator: "a:b;c:d;e:f".Split(";") | ForEach-Object { , $_.Split(":") } That way, the array returned by $_.Split(":")

问题 I am writing a short program which will eventually play connect four. Here it is so far, pastebin There is one part which isn't working. I have a jagged array declared on line 16: char[][] board = Enumerable.Repeat(Enumerable.Repeat('-', 7).ToArray(), 7).ToArray(); Which I think looks like this: ------- ------- ------- ------- ------- ------- ------- when I do this board[5][2] = '*' I get --*---- --*---- --*---- --*---- --*---- --*---- --*---- instead of what I'd like: ------- ------- -------

问题 I am writing a short program which will eventually play connect four. Here it is so far, pastebin There is one part which isn't working. I have a jagged array declared on line 16: char[][] board = Enumerable.Repeat(Enumerable.Repeat('-', 7).ToArray(), 7).ToArray(); Which I think looks like this: ------- ------- ------- ------- ------- ------- ------- when I do this board[5][2] = '*' I get --*---- --*---- --*---- --*---- --*---- --*---- --*---- instead of what I'd like: ------- ------- -------

问题 im trying to add items to jagged array's, the data is being pulled from a datarowview, i have the following code foreach (DataRowView answer in AnswersInQuestion) { answersJArray[index] = new string[noOfAnswersInQuestion]; answersJArray[index][j] = answer["ChoiceText"].ToString(); j++; } the first item gets added in fine, but when the 2nd item is put in the first item is set to null again. so for example the first time round this is what the array will look like arr[0][0] = answer 1 arr[0][1]

问题 How can I save a jagged array in C#? For example: I have the following jagged array: double[][,] myJaggedArr=new double[2][,]; myJaggedArr[0]=new double[3,3]{{1,2,3},{4,5,6},{7,8,9}}; myJaggedArr[1]=new double[3,3]{{1,1,1},{2,2,2},{3,3,3}}; How can I save this jagged array and how can I load it? what if I have a two jagged array and I want to save it in one file? I think it is better to make a class having these two jagged arrays so I can save an object of the class. I know that I can save

问题 I have a function which use a 2D jagged array to save records from an SQL query. How do return the jagged array correctly? I tried something like: public string[][] GetResult() { return result; } And in my main programm: string[][] test = new string[server1.GetResult().Length][]; test = server1.GetResult(); Well, as expected, it didn't work. I don't know how to fix my problem. 回答1: Jagged arrays are simply arrays of arrays. In your code: string[][] test = new string[server1.GetResult().Length

问题 I'm a c++ noob trying to build a personal finance websocket server that tracks all of my assets and liabilities in real-time. I've found that I can make map s of map s to have a multi-dimensional system of key-value pairs. I've also found that boost::any and boost::variant can be used to store multiple types for a values. My problem is that some levels aren't very complex compared to others. For example, a bank account will only have a value, the amount in the account, while a brokerage

问题 Here is my problem: I have a nxn matrix in matlab. I want to delete all the zeros of this matrix and put the rows of it in vectors. For n=4 , let say I have the following matrix: A = [ 1 1 0 0 1 2 0 0 1 0 0 0 1 2 1 0 ]; How to get the following: v1 = [ 1 1 ]; v2 = [ 1 2 ]; v3 = [ 1 ]; v4 = [ 1 2 1 ]; I did the following: for i = 1:size(A, 1) tmp = A(i, :); tmp(A(i, :)==0)=[]; v{i} = tmp; end 回答1: Slightly faster than Divakar's answer: nzv = arrayfun(@(n) nonzeros(A(n,:)), 1:size(A,1),

问题 I've been shown how to create a jagged multidimensional std::map by using boost::any. However, I'm having trouble setting the values like in this answer. When I use accounts["bank"]["cash"] = 100; gcc gives this error error: no match for ‘operator[]’ in ‘accounts.std::map<_Key, _Tp, _Compare, _Alloc>::operator[]<std::basic_string<char>, boost::any, std::less<std::basic_string<char> >, std::allocator<std::pair<const std::basic_string<char>, boost::any> > >((* & std::basic_string<char>(((const