2024 C# find a match in a list

C# find a match in a list

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WebMar 2, 2024 · List refFiles = new List (); refFiles.Add ("AB_DBER_ [0-9] {13,13}.txt"); refFiles.Add ("AB_EBER_ [0-9] {13,13}.txt"); refFiles.Add ("AB_FBER_ [0-9] {13,13}.txt"); I wanted to do something like: foreach (var file in refFiles ) { //if file has a match in files then I need to do some code } WebJul 4, 2014 · 2. This basically gets every record in the MegaList which is also contained within the versionList. In this case x is an value in your MegaList, therefore we do a simple List<>.Contains () on the versionList with the x value. foreach (var m in MegaList.Where (x => versionList.Contains (x.ToLower ()))) { // do some action }

How to search strings (C# Guide) Microsoft Learn

WebJan 18, 2024 · C# allows pattern matching through three constructs: 1. is operator Before C# 7.0, the only purpose of the is operator was to check if an object is compatible with a specific type. Since C# 7.0, the is operator has been extended to test if an expression matches a pattern. Syntax: expression is pattern 2. switch statements WebSep 15, 2024 · Console.WriteLine ($"\"{factMessage}\""); // This search returns the substring between two strings, so // the first index is moved to the character just after the first string. int first = factMessage.IndexOf ("methods") + "methods".Length; int last = factMessage.LastIndexOf ("methods"); string str2 = factMessage.Substring (first, last - … spaghetti strap tank with scoop neckline

c# - Lambda expression to match a List - Stack Overflow

WebYou can use the List.Any() method and a lambda expression to find a string in a list that matches a specified condition in C#. Here's an example: ... In this example, we have a list of fruits and a search term that we want to find in the list. We use the Any() ... WebMar 11, 2016 · Searching a List for an EXACT case insenitive match. List list = new List (); list.Add ("Horse"); list.Add ("Shorse"): I want to search the list for a specific string, regardless of … WebDec 26, 2010 · Teams. Q&A for work. Connect and share knowledge within a single location that is structured and easy to search. Learn more about Teams team triumph british automotive

c# - Find closest match to input string in a list of strings - Stack ...

WebSep 23, 2008 · In C# 2.0 you'd write: result = mObjList.Find (delegate (int x) { return x.ID == magicNumber; }); 3.0 knows lambdas: result = mObjList.Find (x => x.ID == … WebAdd a comment 3 Answers Sorted by: 23 The simplest way is to search each string individually: bool exists = s1.Any (s => s.Contains (s2)); The List.Contains () … team trivia facebookWebJan 14, 2014 · var lookfor = @"something (with) multiple (pattern) (groups)"; var found = Regex.Matches (source, lookfor, regexoptions); var captured = found // linq-ify into list .Cast () // flatten to single list .SelectMany (o => // linq-ify o.Groups.Cast () // don't need the pattern .Skip (1) // select what you wanted .Select (c => c.Value)); … spaghetti strap tea length wedding dress

"WebFeb 1, 2009 · update: if you really mean "StartsWith", then you could sort the list and place it into an array ; then use Array.BinarySearch to find each item - check by lookup to see if it is a full or partial match. Share Follow edited Feb 1, 2009 at 20:35 answered Feb 1, 2009 at 14:44 Marc Gravell 1.0m 260 2542 2883 1 " - C# find a match in a list

C# find a match in a list

Regex.Matches Method (System.Text.RegularExpressions)

WebSoftware Developer. 2003 - Aug 201310 years. I developed and support a program called Recon, which calculates expected reimbursement for Blue Cross, Medicare, Medicaid and managed care contracts ... WebList test3 = test1.Where (w => !test2.Contains (w)).ToList (); The query above works on an exact match but not partial matches. I have looked at other queries but I can find a close comparison to this with Linq. Any ideas or anywhere you can point me to would be a great help. c# linq Share Improve this question Follow

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WebJun 11, 2024 · A simple solution to find the index for any string value in the List. Here is code for a list of strings: int indexOfValue = myList.FindIndex(a => a.Contains("insert value from list")); A simple solution to find the index for any integer value in the List. Here is code for a list of integers: WebFeb 27, 2015 · Find all matches in a List LinQ. Given the situation I got a string array from a file containing IDs. I would like to obtain every string in one new list/array, using LinQ, …

WebAug 29, 2013 · At each point you are only returning a single match. Iterator blocks do not run to completion before returning content. There is no need to calculate the full set of matches in a collection. The only time Any() would run to completion is if it returned false - otherwise it would short-circuit the sequence at the first match. – WebNov 1, 2016 · In just LINQ to Objects, both should work.) To get the count, you'd need something like: var result = query.Select (x => new { x, count = x.tags.Count (tag => list.Contains (tag)) }) .Where (pair => pair.count != 0); Then each element of result is a pair of x (the item) and count (the number of matching tags). Share Improve this answer Follow

WebJan 20, 2024 · Use a HashSet instead of a List, that way you can look for a string without having to loop through the list. var setOfStrings = new HashSet {"Cars", … WebJun 3, 2024 · How To Find An Item In C# List. C# List class provides methods and properties to create a list of objects (classes). The Contains method checks if the specified item is already exists in the List. List is a generic class. You must import the following namespace before using the List class.

WebSep 30, 2024 · List.Find (Predicate) Method is used to search for an element which matches the conditions defined by the specified predicate and it returns the first occurrence of that element within the entire List. Properties of List: It is different from the arrays. A list can be resized dynamically but arrays cannot.

WebMar 28, 2011 · var products = shopProducts.Where (p => p.Name.Any (listOfProducts. Select (l => l.Name).ToList ())).ToList (); I need to say give me all the shopproducts where name exists in the other list. c# linq linq-to-sql linq-to-objects Share Improve this question Follow edited Aug 28, 2024 at 22:56 halfer 19.8k 17 97 185 asked Mar 28, 2011 at 8:47 … teamtrivia.com hint of the week team trivia atlanta free answerWebDec 10, 2012 · Find closest match to input string in a list of strings. Ask Question. Asked 10 years, 3 months ago. Modified 7 days ago. Viewed 22k times. 26. I have problems … team trivia baltimore free answerWebApr 29, 2016 · From there, you can scan ListB and place that in a list when you come across an item in countsOfA: // The items that match. IList matched = new List … team trivia atlantaWebAug 30, 2024 · List.FindAll (Predicate) Method is used to get all the elements that match the conditions defined by the specified predicate. Properties of List: It is different … team trivia answer of the weekWebDec 3, 2024 · You can check elements in a list or an array using a list pattern. A list pattern provides a means to apply a pattern to any element of a sequence. In addition, you can … team trivia facebook phoenixWebOct 19, 2016 · list.Where (i => i.Property == value).FirstOrDefault (); // C# 3.0+ Using List.Find: list.Find (i => i.Property == value); // C# 3.0+ list.Find (delegate (Item i) { … spaghetti strap tank tops plus size