Linq Orderby String Name

The key for an element is calculated by a keySelector delegate method passed into the OrderBy() call. Essentially 2nd approach is the same as that used in 1st one. Unlike the OrderBy Method, it does not consider the actual value in itself in determining the order, instead of this, it returns the items in the reverse order in which they actually present. In my previous blog "LINQ and its linkage to new features in. Kilometers and Price) in the HOL we chose a "bad approach" to use Dynamic SQL to query the DB. This facility is called. Linq GroupBy Method in C# with Examples. NET application by using one of the DocumentModel. Price <= 10000 orderby ad. Order by a property expressed as string in a LINQ Query. He didn't pass the 2nd Where and he wasn't even processed in the last 2 operations OrderBy and Take. The examples in this topic demonstrate how to use the OrderBy, OrderByDescending, Reverse, and ThenByDescending methods to query a DataSet and order the results using the query expression syntax. You can define the function outside the OrderBy() clause:. Format with LINQ Select. I think I can reduce the question down a bit, but will expand if needed. NET on November 03, 2012 Tags: OrderBy Operator , Repeat operator , Linq , VB. Here in this post, we are going to see how to make a lambda expression from a property name of a particular entity, and use it for OrderBy shorting for both IQueryable and IEnumerable sources. Select(c => c. 基于OrderBy的输出类型,编译器推断出query的类型为IOrderedEnumerable。但是下一行中的Where返回一个正常的IEnumerable,所以它已不能重新赋值给query了。我们可以通过显示类型定义或在OrderBy之后调用AsEnumerable()来作为一种变通的方案:. OrderBy() to the rescue. Category) b) var sortedProds = _db. Value, this will only likely give you the integer value, to. groupList是原始数据集合,List sortOrder是排序类型,desc 或者asc. j'ai trouvé un exemple dans les VS2008 exemples pour LINQ dynamique qui vous permet d'utiliser une chaîne de type sql (par exemple OrderBy("Name, Age DESC")) pour la commande. linq OrderBy descending or ascending linq OrderBy public static void OrderBy() { string[] words = { "cherry&qu. I created a List of string elements and then used the LINQ OrderBy for sorting the elements in ascending order:. The files can be loaded from a path or a stream in your C# and VB. OrderBy(a => a. Linq are the corresponding LINQ strategies of the orderby clause. getfiles order by filename how to get directory. 0A\bin\SQLMetal. Following is the syntax of using linq orderbydescending operator to sort list of item values in descending order. Having "fun" with IComparer when trying to do OrderBy in Linq with a custom sort? Me too. IndexOf all have overloads that accept a StringComparison value but, while it seems that it should, String. you can use character, string. Value, this will only likely give you the integer value, to. Unfortunately, the method included only works on IQueryable;. The examples below demonstrate how this works. Is it possible to do a Greater than or Less than comparison between strings in a where clause of a LINQ to CRM query I'm trying to write a LINQ to CRM query where. As a matter of fact, each C# LINQ query operator is a shorthand notation for making a manual call on an underlying extension method, typically defined by the System. NOTE: Be sure to set a reference to System. NET Entity Framework and LINQ to Entities. C#のLINQの関数であるOrderBy()、OrderByDescending()の使い方についてです。 配列やリストの要素の順番を並べ替えることが出来ます。. sortName是排序属性名称. Here's how to use LINQ to sort a String Array containing Numbers For Each num In arr. 0 Speed up Linq to Sql with compiled queries Querying a database using Linq and Reflection Buy DevOps Course Bundle. This is fine for most of the current data types in C#, such as the generic List and the C# array. OrderBy(x => x. How to specify the OrderBy method using LINQ, with a string value as a parameter. LINQ is similar to SQL, but it can work with data aside from databases. Please note that we order the strings, not the letters (characters) in them. Orders a list based on a sort expression. I stumbled across the Dynamic LINQ Library today and can't figure out why more people aren't talking about it. h header, to include all of linq. js is a JavaScript version of. String, System. SelectToken is a method on JToken and takes a string path to a child token. It allows both sorting by strings, and by type safe constructs. How do I specify the argument passed to OrderBy method with LINQ, using a string value as a parameter? This is the current implementation:. I've been playing around with ASP. CustomerID select o; //NOTE the ordering of the orderby’s var col6 = orders. It gets a string named with the beautiful name "names". Value, this will only likely give you the integer value, to. In my previous blog “LINQ and its linkage to new features in. I recently had to filter and order some datasets. yourSortAttribute) this will not sort it numerically. Example, LINQ. GetComponentsInChildren(); // Select(go => go. As it stands now, it adds no value, and stands the change of being downvoted / deleted. The item may be missing its original packaging, or the original packaging has been opened or is no longer sealed. A part of the ADO. SQLMetal: c:\Program Files\Microsoft SDKs\Windows\v6. C#のLINQの関数であるThenBy()、ThenByDescending()の使い方についてです。 すでに並べ替えた後のシーケンスに対して、更に追加の条件で並べ替えることが出来ます。. Dim filteredNames As IEnumerable (Of String) = From n In names n For Each name As String In filteredNames Console. I found an example in the VS2008 Examples for Dynamic LINQ that allows you to use a sql-like string (e. For sorting this problem out,. NET IQueryable. Thus after. Collections. Generic; using. He didn't pass the 2nd Where and he wasn't even processed in the last 2 operations OrderBy and Take. net core I was using this in 4. Sort strings with LINQ Here we see how to take a string[] array and use a LINQ query expression to order its contents alphabetically. I think I can reduce the question down a bit, but will expand if needed. Package linq provides methods for querying and manipulating slices, arrays, maps, strings, channels and collections. We have seen in the previous example that the easiest way to sort a collection of strings is to use the LINQ extension OrderBy() on an enumerable object. This tutorial will introduce you to LINQ and teach you how to use the OrderBy method to sort your data. The index methods on JObject/JArray let you quickly get data by its property name on an object or index in a collection, while M:Newtonsoft. City == "Hove"). PowerShell is a scripting language, and like all scripting languages it struggles to perform well with rapid iterative processes such as aggregation. SortExpression will expose the SortExpression value of the column that is going to be sorted. Enumerable query methods. Ordering By a Column Name. The grouping of data in C# linq is different from the SQL grouping. Syntax of LINQ OrderByDescending Operator. If we group by using the SQL clause we get the flat record set. The sorting functionality is achieved by using the orderby opertaor. There is a very simply solution. Allows a bit what dynamic LINQ does with strings, but wraps the operation in a object, just like with the Query Object pattern. The following code shows a LINQ query that returns the input inValues unmodified. Order by a property expressed as string in a LINQ Query. Note that we are ordering the strings, not the letters in the strings. Age desceding 上記の場合、記述的には. So, it's been a while, but I thought I take moment and do my annual blog post ;). Syntax of LINQ OrderBy Operator Following is the syntax of using orderby operator in linq to sort list / collection values in ascending order. I am still learning to write readable and clean code. OrderBy 就可以了. j'ai trouvé un exemple dans les VS2008 exemples pour LINQ dynamique qui vous permet d'utiliser une chaîne de type sql (par exemple OrderBy("Name, Age DESC")) pour la commande. However, some. Unfortunately, the method included only works on IQueryable;. Here in this post, we are going to see how to make a lambda expression from a property name of a particular entity, and use it for OrderBy shorting for both IQueryable and IEnumerable sources. The OrderBy() method has an overload that accepts an IComparer for specifying a bespoke way of ordering objects of type TKey. Name * Email * Website. LINQ makes the orderby statement and the OrderBy() method available to accomplish this. C# LINQ C# linq LINQ Distinct operator is used for removing duplicates elements from the sequence (list). We are going to retrieve users whose name starts with A and a car speed is more than 300 km per hour or whose ID is higher than 0. The strings are sorted primarily by length and secondarily by the first letter of the string, both in ascending order. Collections. If user wants to sort on LastName. NET Posted in VB. I stumbled across the Dynamic LINQ Library today and can't figure out why more people aren't talking about it. This is fine for most of the current data types in C#, such as the generic List and the C# array. One such operator is the LINQ OrderBy operator, which performs ordering of elements in a collection. In this article, I am going to discuss the Linq GroupBy Method in C# with some examples. h and linq folder to the include directory for your compiler. 12/01/2016; 2 minutes to read +3; In this article. dynamic orderby (6). The reverse operator is used to reverse the order of the sequence or collection. In query expression syntax, an orderby (Visual C#) or Order By (Visual Basic) clause translates to an invocation of OrderBy. Part 17 - AsEnumerable and AsQueryable in LINQ GroupBy operator belong to Grouping Operators category. I realize that many of you have been anxiously awaiting the next installment. And the list need be sorted numerically. NET GridView to a Lamba Expression for your Queryable. People are not going to know what DTRow is for example. To resolve, you can add the following small class or just the method to a generic DLL you use in your web application projects or create a new…. GenderCode). OrderBy及びOrderByDescendingは、ともに並び替えを行うクエリ演算子です。 SQLでもおなじみのものなので、あまり説明することがありませんw OrderBy及びOrderByDescendingメソッドは、単一キーでのソートを行います。. Please read our previous article before proceeding to this article where we discussed the Linq GroupBy Operator with Multiple Keys with some examples. Ordinal since it feels like the more "correct" in this case but unfortunately this generates a huge diff in e. For doing this with LINQ you need to write your own OrderBy in form of Extension Method. Linq to Querystring uses an expression parser written in ANTLR to map a subset of odata-compatible expressions onto any. Net languages. If any have matching Last and First, then they should be ordered by Middle. With the data source information. I'm trying to tweak the Dictionary to create a Dictionary similar to a perl hash array. One reason for LINQ to structure queries in this fashion is because the IDE can see the data source before we begin typing the where, orderby, and select clauses. C# provides a syntactic shortcut for writing LINQ queries, called query comprehension syntax, or simply query syntax. WriteLine(name) Next End Sub. NET SiteMap 쿼리하기 2009. OrderBy and Repeat operator in Linq using VB. How to use string. In query expression syntax, an orderby (Visual C#) or Order By (Visual Basic) clause translates to an invocation of OrderBy. Your combination of the Linq statement and the loop does look ok, but will produce different results than in the Autocomplete() method, as you are selecting Relation. OrderBy("Name, Age DESC")) for ordering. We are going to retrieve users whose name starts with A and a car speed is more than 300 km per hour or whose ID is higher than 0. Using a compound orderby to sort a list of digits first by length of their name, and then alphabetically. In the next chapter, you will learn ThenBy operator in C#. I know what the field name is but that's string rather than a field instance. When you execute a Linq statement, the component translates language-integrated queries into CQL and sends them to the cluster for execution. This is different from LINQ technologies such as LINQ to SQL or LINQ to Entities which require the LINQ query to be translated to the target source's query language, and are therefore limited by what can be translated. C# LINQ C# linq LINQ Distinct operator is used for removing duplicates elements from the sequence (list). Personally I think this is a good thing. So as noted earlier, while C++11 have lamda, it doesn't have extension method, then how are we going to implement LINQ in C++? If we implement where, orderby, select as free functions, and we don't do any workaround for extension methods, then in C++, we can write query of this form only:. Due to the fact that in my company, Solr was chosen as a full-text search platform, there appeared a strong desire to simplify the work with Solr queries using LINQ expressions. StudentID select student; foreach (Student student in result). Note that the ordering is performed after the join. High Performance PowerShell with LINQ. In LINQ, if we use order by the operator by default, it will sort the list of values in ascending order. OrderBy or OrderByDescending performs the primary sort. OrderBy(Function System. How to use string. is there any easy way out. DocumentDB SQL - Linq to SQL Translation - In DocumentDB, we actually use SQL to query documents. Lambda < Func, string>(Expression. C#のLINQの関数であるOrderBy()、OrderByDescending()の使い方についてです。 配列やリストの要素の順番を並べ替えることが出来ます。. Enumerable System. The selector method should take a single parameter of type T and should return a value of type U. I stumbled across the Dynamic LINQ Library today and can't figure out why more people aren't talking about it. Please read our previous article before proceeding to this article where we discussed the Linq Contains Method in C# with examples. Sie sollten in der Lage sein, manuell eine Ausdrucksbaumstruktur zu erstellen, die an OrderBy übergeben werden kann, indem der Name als Zeichenfolge verwendet wird. 5 – Part I”, we have seen how a query can be expressed with clarity with object oriented programming notation and couple of code snippets that showed how a class can be extended through “extension” methods – a concept that is introduced in. Please read our previous article before proceeding to this article where we discussed the Linq GroupBy Operator with Multiple Keys with some examples. The key for an element is calculated by a keySelector delegate method passed into the OrderBy() call. 0 에서 LINQ TO OBJECT 구현하기 2009. Ordering By a Column Name. OrderBy(x => x. I think I can reduce the question down a bit, but will expand if needed. Can anyone here give me an example ordering by multiple columns using VB. 아래와 같이 Name 프로퍼티만 추출하면 IEnumerable 형식이 될 것입니다. It isn't well-known that PowerShell can use LINQ for many of those tasks which would otherwise use iteration, though somewhat awkwardly. Implementing OrderBy. Which options does OpenAccess and LINQ provide to perform string matching? Into which SQL is the LINQ expression translated? Let’s use a simple class model for this post: a Person with a FirstName, a LastName and a NickName. In the next chapter, you will learn ThenBy operator in C#. js is a JavaScript version of. Name ascending orderby x. On this IEnumerable we put the three filters – “where”, “orderby” and “select”. The LINQ provider automatically maps document fields in the index to properties on the custom search type by the names of the properties. NET applications Working with AWS S3 through C# A practical use of Serialization and Extension methods in C# 3. 碰到說 已經在專案下, 加入 DLL 參考元件. "SomeTextField") In this way I could move all this code to a common method. getfiles order by filename how to get directory. Frequently you have some strongly typed object and you want to order by some property on that object. How Group by works with C# Linq. OrderBy(x => x. You can use the DynamicQuery library against any LINQ data provider (including LINQ to SQL, LINQ to Objects, LINQ to XML, LINQ to Entities, LINQ to SharePoint, LINQ to TerraServer, etc). The method 'OrderBy' must be called before the method 'Skip'. Distinct(). GitHub Gist: instantly share code, notes, and snippets. It implements all the. Generics With lambda expression and Linq in C# Generics: As we know C# is a strongly typed language, programmers have to specify the type of an object at the time of writing the program. Name, StringComparer. NET, using LINQ to Sort Numeric Strings,LINQ orderby, LINQ to Objects, LINQ Query Expressions, LINQ Select, LINQ Orderby in asp. It is a declarative syntax form that implants the query capabilities directly into the C# language. GenderCode). LINQ help with sorting by Month name into order of month not alphabet [Answered] RSS 1 reply Last post Nov 04, 2014 03:56 AM by Eileen ni - MSFT. クエリ実行結果の並べ替え(ソート)を行うときは、orderby句を使います。 orderby ソートキー 方法 並べ替えの順序は、 ascending(昇順) descending(降順) を指定することができます。. Queryable Delegate based Expression tree based Objects SQL DataSets Others…. The 3 query expressions use an orderby element, orderby element ascending, and orderby element descending syntax. As a matter of fact, each C# LINQ query operator is a shorthand notation for making a manual call on an underlying extension method, typically defined by the System. You should really post more of the code when you are asking for help. String Format(System. The Dynamic LINQ API extends the core LINQ API with that capability. Installation. Linq to Dataset is allows us to retrieve data from the Dataset. The below query outputs the products ordered by the product name field. Dynamic SQL-like Linq OrderBy Extension Anyway, hope someone finds it useful. Name ascending, x. In this article I show that this can be actually done very well for most of the common cases. NET Framework 3. There are three types of conversion operators: As operators (AsEnumerable and AsQueryable), To operators (ToArray, ToDictionary, ToList and ToLookup), and Casting operators (Cast and OfType). Here’s an example. An array of string values sorted first by length, then sorted alphabetically, using a case-insentive comparison. C# - The Type Arguments For Method System. When using an ORM such as NHibernate or Entity Framework with AutoMapper’s standard mapper. Tanımlamalar. 12/01/2016; 2 minutes to read +3; In this article. a) Compared to SQL, LINQ is complex, tidier, and lower-level b) LINQ supports ad hoc join c) Another benefit of LINQ is that you can query across relationships without having to join d) None of the mentioned View Answer. How to specify the OrderBy method using LINQ, with a string value as a parameter. Posts about Ordering Operators in Linq written by Ajay Kumar Sharma. NET applications Working with AWS S3 through C# A practical use of Serialization and Extension methods in C# 3. 5 : http://weblogs. If user wants to sort on LastName. Data Platform Development > ADO. I needed to order a collection of properties in C# and I immediately grabbed for LINQ: var result = items. Orderby(x=>x. yourSortAttribute) this will not sort it numerically. (The result of a constant expression is interpreted as a property name to be used for comparison. I'm trying to follow the demo from this link to add a jqGrid to an MVC app. Fine, but LINQ is beyond that and we can combine various functions and operators associated with a LINQ query. To do this, we create the following object:. Note that the ordering is performed after the join. 我在 VS2008 Examples的Dynamic LINQ中找到了一个例子,它允许你使用类似sql的字符串(例如OrderBy(“Name,Age DESC”))来进行排序。不幸的是,该方法仅包括对IQueryable的工作。. Item specifics Condition: New other (see details): A new, unused item with absolutely no signs of wear. Format with LINQ Select 24 December 2014 Donovan-Brown Work (0) When I project new data types using the Select operator I sometimes want to create new strings from the combination of existing properties. h will include the query syntax as well. NET IQueryable. To sort a set of elements that implement IComparable with Linq use OrderBy Note that the default sort ignores case. LINQ can be extended to use a number of different datasources, such as a CLR data structure (CLR type), an SQL database of some kind, a Web or WCF service, the the. Sie sollten in der Lage sein, manuell eine Ausdrucksbaumstruktur zu erstellen, die an OrderBy übergeben werden kann, indem der Name als Zeichenfolge verwendet wird. OrderBy(Function(c As WebCategory) c. ToString() : ""; } 最後に、私はOrderByにカスタムIComparerを使用させ. How to specify the OrderBy method using LINQ, with a string value as a parameter. UserID" as orderExpression paraemter. OrderBy() method. DatasetExtensions. Class Car Public Property Name() As String. Ordinal since it feels like the more "correct" in this case but unfortunately this generates a huge diff in e. public static System. Tags: How to Sort Numeric Strings in C#, using LINQ to Sort Numeric Strings,LINQ orderby, LINQ to Objects, LINQ Query Expressions, LINQ Select, LINQ Orderby in asp. This operator by default converts the order of the given sequence in ascending order. The other way of sorting a List is using the Linq in C#. Or in other words, in LINQ, the collection is the first sort according to the primary field which is given by OrderBy method after that the result of the primary sort is again sorted by the secondary field that is given by the ThenByDescending method. Package linq provides methods for querying and manipulating slices, arrays, maps, strings, channels and collections. Tags: String Sort using LINQ orderby VB. output: The Ruby equivalent is sort Note that the default sort respects case. Let's assume parameters with the name simpleParam (string) and manyParam (ICollection). Globalization. Lambda Expressions and Linq Operators. The Dynamic Expression API is present in the System. Learn how to use LINQ in your applications with these code samples, covering the entire range of LINQ functionality and demonstrating LINQ with SQL, DataSets, and XML. One of my colleagues was curious to know how to implement a Distinct-OrderBy on a custom collection in LINQ. Name * Email * Website. Have you tried debugging through the code to see if the value is there somewhere? Might be as simple as changing the line to something like below, given the result you get into the grid you need to convert the object you insert there into an optionset object and get the data from there, something like ((OptionSetValue)c. NET Posted in VB. The waypoints have a parent object which holds the script and each contain a spawnpoint object as a child. Secondary Sort operators ( ThenBy or ThenByDescending ) can be used more than once in the same LINQ query. Frequently you have some strongly typed object and you want to order by some property on that object. I have the code below but I dont know how to implement that order. Instead of using ordinary foreach statement in doing your search, you should use parallel linq. The most important point that you need to keep in mind is this method is not going to change the data rather it is just changing the order of the data. Here's how to use LINQ to sort a String Array containing Numbers For Each num In arr. It also presents a WPF example on how to use this utility. LINQ ThenBy and ThenByDescending Method in C# with Examples. using System. One of important benefits of LINQ is that it enables you to write type-safe queries in VB and C#. Call OrderBy () with a field name as a string [duplicate] The result of GetAllList() is a List. It is a great tool when you want to see the summarize result based on group. net core I was using this in 4. We need to use IEqualityComparer to compare with any complex object, so first we have to create a custom class that will inherit from IEqualityComparer. cs-2006-1 10/30/06 linq-Principles Map a query language to cascading method calls. Contains has no such overload. (hey, isn't that literally the whole acronym?) True, you can't write the following LINQ statement in TypeScript. In this article, I am going to discuss the LINQ ThenBy and ThenByDescending Method in C# with examples. This operator by default converts the order of the given sequence in ascending order. Sorting an array using Linq and OrderBy I'm trying to sort an array of waypoint object each starting with 'WP' followed by a number from 1 - 9. In query expression syntax, an orderby (Visual C#) or Order By (Visual Basic) clause translates to an invocation of OrderBy. OrderByDescending() that accepts a string as argument, so i decided to write an extension method that can take a string representation of a property and use reflection to create a expression that can be. The item may be missing its original packaging, or the original packaging has been opened or is no longer sealed. Where (p => p. TypeScript has no equivalent for the language-integrated-natural-query aspect of LINQ. Age desceding 上記の場合、記述的には. Unlike the OrderBy Method, it does not consider the actual value in itself in determining the order, instead of this, it returns the items in the reverse order in which they actually present. Orderby (c => c. NET Language Integrated Query (LINQ). Syntax of LINQ ThenBy. Dynamic LINQ OrderBy extension method. Using tolist, this LINQ (Query Expression) sample in C# converts string array to List of strings. j'ai trouvé un exemple dans les VS2008 exemples pour LINQ dynamique qui vous permet d'utiliser une chaîne de type sql (par exemple OrderBy("Name, Age DESC")) pour la commande. ThenBy operator The ThenBy operator Performs a subsequent ordering of the elements in a sequence in ascending order or, The ThenBy operator orders an ordered sequence according to one or more keys in ascending order. Then the OrderBy operator sorts the car names in the increase order of the name of the length and finally Select operator capitalizes the names of the car and return the sequence. ToString() : ""; } 最後に、私はOrderByにカスタムIComparerを使用させ. Here's a query that shows you how to first Order the results by Length, and then by Name, using LINQ. In the preceding section, we wrote a query to extract strings containing the letter a, sorted by length, and converted to uppercase. In LINQ, Lambda Expression is a function without a name. Having surfed the Internet for alternatives, I came to the conclusion that at the moment I do not have the required library to be publicly available. Update the Expression to OrderBy on our dynamic property selector. Your solution introduces several problems: You OrderBy a property by name, hoping that the objects you order have this property. OrderID) here i mention my order by clause but suppose now i am in condition where i am passing order by field name and that can be anything so in that case how to handle it in linq. Dynamic LINQ OrderBy using String Names! LINQ is a new enhancement to the. ToList(); (4) While this code sample may answer the question, it lacks explanation. In this article, I have written several programs that is easy to understand and will help you to understand GropuBy operator. C# LINQ C# linq LINQ Distinct operator is used for removing duplicates elements from the sequence (list). Price select ad; But view that we need to pass any parameters independently or combined (e. So, now that we have learned through the previous article how to get data from the data source with LINQ and filter it with the Where() method, the next step could be to sort the data. In an attempt to create a dynamic LINQ string, to replace field names with fieldName dynamically set by: string filedName = lb. The grouping of data in C# linq is different from the SQL grouping. public object Get (int id) { return this. Linq GroupBy Method in C# with Examples. There is no need to add an extra ascending condition in the query expression means ascending keyword is optional. NET Posted in VB. OrderBy(a=> a. LINQ Method Syntax: Filter C# Lists. This site uses cookies for analytics, personalized content and ads. Unlike the OrderBy Method, it does not consider the actual value in itself in determining the order, instead of this, it returns the items in the reverse order in which they actually present. see this code books. GitHub Gist: instantly share code, notes, and snippets. With "Select" we use "ToUpper", in order to make the results with upper case. LINQ to Entities string based dynamic OrderBy 21 November 2008 The problem I kept having was that at some point you'll need to convert the GridView. CIS611 - LINQ to SQL Lecture Notes - Prof. It allows both sorting by strings, and by type safe constructs. LINQ 결과는 IEnumerable로 반환되는데 형식 매개변수 T는 select 문에 의해 결정됩니다. public static IEnumerable OrderBy(this IEnumerable list, string sortExpression) { sortExpression += ""; string[] parts = sortExpression. The "using System. Linq OrderBy sort rule I want to know on which rule the OrderBy method of Linq decides on how to sort a list of chars. NET MVC and the Linq stuff for NHibernate recently. Linq ToLookup Method in C# with example.