WebAug 19, 2014 · In more recent versions of c# you can now use: string [] arrstr = str.TakeLast (3).ToArray (); Share Improve this answer Follow edited Jun 20, 2024 at 14:24 answered Aug 19, 2014 at 12:45 thumbmunkeys 20.5k 8 61 109 1 There is now a .TakeLast (3) method available in LINQ: learn.microsoft.com/en-us/dotnet/api/… – Ovenkoek Jun 2, …
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WebDec 1, 2015 · 185. If you're using .NET 3.5 or higher, it's easy using LINQ to Objects: stringCutted = myString.Split ('/').Last (); Note that Last () (without a predicate) is optimized for the case where the source implements IList (as a single-dimensional array does) so this won't iterate over the whole array to find the last element. WebMay 31, 2016 · You can do this by accessing the jsonData.seats array by index, index of the last item being equal to jsonData.seats.length-1 simply: var countryId = jsonData.seats [jsonData.seats.length-1].countryid Share Improve this answer Follow edited May 31, 2016 at 9:48 answered May 31, 2016 at 9:39 Mehdi 7,019 1 35 44 Add a comment 2 Try this:
WebFeb 1, 2024 · A Computer Science portal for geeks. It contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview Questions. WebSep 29, 2024 · A Computer Science portal for geeks. It contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview Questions.
WebSep 17, 2024 · I know that MongoDB supports the syntax find{array.0.field:"value"}, but I specifically want to do this for the last element in the array, which means I don't know the index.Is there some kind of operator for this, or am I out of luck? EDIT: To clarify, I want find() to only return documents where a field in the last element of an array matches a … WebAug 10, 2010 · Usage: List l = new List {4, 6, 3, 6, 2, 5, 7}; List lastElements = l.TakeLast (3).ToList (); It works by using a ring buffer of size N to store the elements as it sees them, overwriting old elements with new ones. When the end of the enumerable is reached the ring buffer contains the last N elements. Share.
WebJan 18, 2009 · This is entirely possible in Array, but it is not efficient. You literally have to shift down your array using a loop and setting arr [i] = arr [i+1] in a for loop. After this, if you want, you have to resize the array. Because of these caveats, array isn't the best data structure to deal with problem.
WebThis will give you an array that contains the first five elements and the last five elements of the original array. Note that if the original array contains less than ten elements, the resulting array will contain all the elements of the original array. More C# Questions. Entity Framework Core migration - connection string mybatis cannot delete or update a parent rowWebSep 5, 2016 · Try: foreach (var item in list.Skip(Math.Max(0, list.Count - 50))) If you know the list will be at least 50 long, you can avoid the range checking: mybatis case when thenWebMar 27, 2024 · Get the Last Element of a List With the List.Count Property in C# The List.Count property gives the number of elements inside the list in C#. We can get the last index of the list by subtracting 1 from the List.Count value. We can then find the last element of the list by using this index. mybatis case when 多条件WebDec 7, 2014 · fruits.splice (0, 1); // Removes first array element var lastElementIndex = fruits.length-1; // Gets last element index fruits.splice (lastElementIndex, 1); // Removes last array element To remove last element also you can do it this way: fruits.splice (-1, 1); See Remove last item from array to see more comments about it. Share mybatis case when then else endWebYou can use a .Where method with lambda that accepts the element index as its second parameter: int [] someArray = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18 }; int [] newArray = someArray.Where ( (e, i) => i < 5 i >= someArray.Length - 5).ToArray (); foreach (var item in newArray) { Console.WriteLine (item); } Output: mybatis case when 报错WebJun 22, 2024 · Program to get the last element from an array using C#. Programming … mybatis case when endWebMay 21, 2024 · First of all, cannot see the reason that you are doing this : String [] lastNum = arr [arr.length - 1]; System.out.println (lastNum [lastNum.length-1]); Even if you wanted to do so, you would have to replace String with int because your arr array has integer arrays in it. mybatis case when 多个条件