ienumerable how to get count?
448301
In its simplest form (without any parameters), the Count() method returns an int indicating the number of elements in the source sequence. IEnumerable<string> strings = new List<string> { "first", "then", "and then", "finally" }; // Will return 4 int result = strings. Count();
1086584
['None.', 'False.', 'zero of any numeric type, for example, 0 , 0L , 0.0 , 0j .', "any empty sequence, for example, '' , () , [] .", 'any empty mapping, for example, {} .']
869816
The biggest difference is that oList. Where(e => e.Name == "John") is type of IEnumerable<Employee>, but oList. Find(e => e.Name == "John") is a type of Employee.
155891
["Row index 0 data: var table = $('#example').DataTable(); var data = table.row( 0 ).data(); ... ", "Select a single row by id: var table = $('#example').DataTable(); var row = table.row('#row-42'); ... ", 'Select rows by class name: ... ', 'Get the data for a row that was clicked upon: ... ', 'Get data from rows in a jQuery instance:']
838603
Python eases the programmers' task by providing a built-in function enumerate() for this task. Enumerate() method adds a counter to an iterable and returns it in a form of enumerate object. This enumerate object can then be used directly in for loops or be converted into a list of tuples using list() method.
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['using System. Data;', 'using System. Data. SqlClient;', 'using System.IO;']
510080
["getParameter(String name) – This method is used to get the value of a request's parameter. ... ", 'getParameterNames() – It returns enumeration of all the parameter names associated to the request. ... ', 'getParameterValues(String name) – It returns the array of parameter values.']
334876
Browse to the folder containing the files you want to count. Highlight one of the files in that folder and press the keyboard shortcut Ctrl+A to highlight all files and folders in that folder. In the Explorer status bar, you'll see how many files and folders are highlighted, as shown in the picture below.
86646
The advantage of IEnumerable is deferred execution (usually with databases). The query will not get executed until you actually loop through the data. It's a query waiting until it's needed (aka lazy loading). If you call ToList, the query will be executed, or "materialized" as I like to say.
813670
['=COUNTA(C5:C11)/COUNTA(B5:B11) How this formula works. ... ', '=complete/total. which is then formatted as a percentage. ... ', '=COUNTA(C5:C11) To count total tasks, we count non-blank cells in the range C5:C11:', 'COUNTA(B5:B11)']
44319
['Simple For loop.', 'Enhanced For loop.', 'Iterator.', 'ListIterator.', 'While loop.', 'Iterable.forEach() util.', 'Stream.forEach() util.']
1427137
The standard query operators are the methods that form the LINQ pattern. Most of these methods operate on sequences, where a sequence is an object whose type implements the IEnumerable<T> interface or the IQueryable<T> interface.
240104
["Obtain an iterator to the start of the collection by calling the collection's iterator( ) method.", 'Set up a loop that makes a call to hasNext( ). Have the loop iterate as long as hasNext( ) returns true.', 'Within the loop, obtain each element by calling next( ).']
568771
['StringValues value1;', 'Request. Headers. TryGetValue("param1", out value1);', 'var v1= value1. FirstOrDefault();']
508232
Count - 1; i >= 0; i--) lstClientes. Items. Remove(selectedItems[i]); } else MessageBox. Show("Debe seleccionar un email");
874661
['$objExcel = New-Object -ComObject Excel.Application.', '$WorkBook = $objExcel.Workbooks.Open ($ExcelFile)', '$WorkBook.sheets | Select-Object -Property Name.', '$WorkSheet = $WorkBook.Sheets.Item(1)', '$totalNoOfRecords = ($WorkSheet.UsedRange.Rows).count.']
677005
['First find the value from datatable that particular column value by using "Datarow[ ] results = Datatable.Select("[ColB]=\'your value\'")', 'The above step will return “Datarow[ ]”', 'Iterate with Datarow[ ] by using For-each activity with Type Argument=System.']