Please note that we are writing an own method to sort our one-dimensional array, containing the class instances. output = output + "RESULTS after SORTING:" + endofline + endofline For each result as vehicle in results output = output + result.driver + " | " + result.car + EndOfLine next taResults.value = output So in case you have the need of a multidimensional array, it is best // to transfer the variables into a class and add those classes to a one-dimensional array, // which you can sort with your own logic. results.sort(addressof vehicleCompareCar ) // Exporting the array again, is now showing that the entries got sorted. Even the word "sort" will not be shown as the Xojo IDE knows that // an array can not be sorted (out-of-the-box) if it contains classes.
Xojo array number of values code#
The main code is straight forward: // Defining a single dimensioned array, which will contain all our cars var results() as vehicle // Creating 6 cars (with drivers) // the id is only for information purposes for x as integer = 0 to 5 var result as new vehicle result.id = x select case x case 0 result.driver = "Marcel" result.car = "Mercedes" case 1 result.driver = "Jeannot" result.car = "Hyundai" case 2 result.driver = "Anton" result.car = "Alfa Romeo" case 3 result.driver = "Silke" result.car = "Toyota" case 4 result.driver = "Xavier" result.car = "Citroen" case 5 result.driver = "Pluto" result.car = "Porsche" end select results.AddRow(result) next x var output as string // Show the created cars by exporting them through // looping over our array output = "RESULTS w/o SORTING:" + endofline + endofline For each result as vehicle in results output = output + result.driver + " | " + result.car + EndOfLine next output = output + endofline // You can't sort "classes" in an array and you can't reference to // properties of the classes in this array, but you can create your own // method for sorting and reference to this method // Please note that auto completion will not work in the IDE for this sort kind // of sort statement.
Xojo array number of values download#
Otherwise you use append or insert methods which dynamically allocate new memory when you hit the current allocation limit.You can download the above dummy project here: What to do? Whenever you fill an array and you know the final ubound in advance, you can use redim beforehand and then set values. Arrays can have a maximum index value of 2,147,483,646. We made a feedback request to ask for optimization: Feedback 58755. All Arrays are indexed starting at position 0.
There is no optimization to just change internal ubound and keep array allocation if e.g. So unless redim has already the value of ubound, a new memory block will be allocated and data is copied. When you do a redim on the array, you set the allocated size to the array to an explicit value. The number of values added is doubled each time as you see in our table: From Ubound It gave the number of occurrences for the name Max.s our data set is not a big one, you can have a quick look and find there are 4 ‘Max’ inside that Customer Name column.or the rest of the values, you can use Excel AutoFill. Then whenever the appended values fills the allocated space, the allocation is resized to make room for more values. We didn’t use Absolute Reference, so our cell references kept changing and gave wrong output. Then when you append the first value, the memory is allocated for 16 values, byte size depending on byte size of elements. We measured a bit and it looks like allocating an empty array will just allocate the array structure, but not allocate data for the array values. When you allocate an array in Xojo, you may wonder how many bytes are allocated and when.
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