multidimensional-array

问题 Please check the following... var arr = [["test", 1], ["test", 3], ["test", 5]] var otherArr = arr.slice(0) //should be a new array with a copy of arr When i evaluate arr === otherArr the result is FALSE . When i do the following, trying to change first array value: otherArr[0][1] = otherArr[0][1] + 5; it also changes the original array (arr) arr[0][1] === otherArr[0][1] evaluates to TRUE but arr === otherArr evaluates to FALSE Please help me understand this to avoid it. 回答1: This is best

问题 I have an array in angularjs, Example as below. $scope.order.qty='20'; $scope.order.adress='Bekasi'; $scope.order.city='Bekasi'; This array can post with this code $http({ method : 'POST', url : '<?php echo base_url(); ?>add_order', data : $scope.order, headers : {'Content-Type': 'application/x-www-form-urlencoded'} }) I can get all variable with $_POST = json_decode(file_get_contents('php://input'), true); $_POST['qty']; $_POST['address']; $_POST['city']; But I'm confused if array multi

问题 I have an array of the products as in the sample below. Products can be two , or three and more . In this example, three. $all_products = array( 'product_1' =>array( 'price' =>'$100', 'quantity' =>'2pcs.', 'availability'=>'In Stock', 'manufacturer'=>'Apple'), 'product_2' =>array( 'price' =>'$200', 'quantity' =>'2pcs.', 'availability'=>'In Stock', 'manufacturer'=>''), 'product_3' =>array( 'price' =>'$300', 'quantity' =>'2pcs.', 'availability'=>'In Stock', 'manufacturer'=>'') ); I need to

问题 Coming from PHP background I could do this in PHP: $array[sales_details][uid] = 1; $array[sales_details][name] = "Name Surname"; $array[sales_details][sales][France][Paris] = 50; $array[sales_details][sales][France][Lyon] = 25; $array[sales_details][sales][UK][London] = 75; $array[sales_details][sales][German][Berlin] = 23; How can I do this in C#? I tried looking into Dictionary. But even if I define the value key as object it will not accept the "sales" array. var dict = new Dictionary

问题 I have an array of objects $tab that are "rows" of a table (i.e. you can access each column through " $tab[$i]->columnname . I have another array of objects $tab_json that is the return of an AJAX call, and that contains, too , "rows" of a table (i.e. you can access each column through " $tab_json[$i]->columnname . Both arrays contain exactly the same colums, but I would just like to "guess" which ones in $tab are not present in $tab_json . Of course I know array-intersect and array-diff

问题 I'm using HDF5DotNet in C# and I have a very large array (several GB) that I want to write to an HDF5 file. It's too big to store the whole thing in memory, so I'm generating regions of it at a time and want to write them out, but still have it look like one big array when it's read back out. I know this is possible with HDF5 but the documentation for the .NET API is somewhat sparse. I wrote some short example code with a 5 x 3 array filled with values 1..15: const int ROWS = 5; const int

问题 I'm using HDF5DotNet in C# and I have a very large array (several GB) that I want to write to an HDF5 file. It's too big to store the whole thing in memory, so I'm generating regions of it at a time and want to write them out, but still have it look like one big array when it's read back out. I know this is possible with HDF5 but the documentation for the .NET API is somewhat sparse. I wrote some short example code with a 5 x 3 array filled with values 1..15: const int ROWS = 5; const int

问题 I am trying to insert a 2D array of size [2, 2] into a 3D array of size [2, 3, 2] . For every page of the 3D array (axis=0), the position to insert the 2D array (read: row number) may be different. I tried to use the np.insert function. However, I am struggling... import numpy as np arr = np.arange(12).reshape(2, 3, 2) arr array([[[ 0, 1], [ 2, 3], [ 4, 5]], [[ 6, 7], [ 8, 9], [10, 11]]]) row_number_before_insertion = [1, 2] val_to_insert = (np.ones(4) * 100).reshape(2,2) arr_expanded = np

问题 I am trying to insert a 2D array of size [2, 2] into a 3D array of size [2, 3, 2] . For every page of the 3D array (axis=0), the position to insert the 2D array (read: row number) may be different. I tried to use the np.insert function. However, I am struggling... import numpy as np arr = np.arange(12).reshape(2, 3, 2) arr array([[[ 0, 1], [ 2, 3], [ 4, 5]], [[ 6, 7], [ 8, 9], [10, 11]]]) row_number_before_insertion = [1, 2] val_to_insert = (np.ones(4) * 100).reshape(2,2) arr_expanded = np

问题 What I am really trying to achieve is an array of dynamic byte patterns that I can use as a pattern searcher when I buffer binary files. But I am starting off basic for now. I have the following code that I based off of an example found on StackOverflow. How to Initialize a Multidimensional Char Array in C? typedef unsigned char BYTE; int main() { BYTE *p[2][4] = { {0x44,0x58,0x54,0x31}, {0x44,0x58,0x54,0x00} }; return 0; } I compile it with mingw32 for Windows. D:\> gcc example.c -o example