Yahoo Web Search

Search results

1. • • This approach, pioneered by ML in 1973, permits writing common functions or types that differ only in the set of types on which they operate when used, thus reducing duplication. Such software entities are known as generics in Ada, C#, Delphi, Eiffel, F#, Java, Rust, Swift, TypeScript and Visual Basic.NET.
     dev.to › chris_bertrand › coding-concepts---generics-34cf

     Coding Concepts - Generics - DEV Community

2. Top results related to what is a generic software entity code

   • What is IEntity in this code for a generic repository pattern?

     Top Answer

     Answered Jan 15, 2016 · 3 votes

     It's a generic type parameter constraint to define what type of entities can handle a repository.

     That is, TEntity is IEntity or any derived class, but at least TEntity references will gain compile-time access to IEntity members. This is a huge improvement since you don't need to perform run-time type checks prior to casting a reference because you don't need a cast anymore.

     For example, Add(TEntity) without generics would look as Add(Entity) which would force the runtime to perform an upcast (f.e. Add(new DerivedEntity()) which upcasts DerivedEntity to Entity).

     When using generics, an IRepository<DerivedEntity> will compile Add as Add(DerivedEntity), so, where's the cast right now when adding an entity of type DerivedEntity

     ? ;)

     When would this ID be set?

     Usually the repository implementation should set the TEntity.Id:

     public void Add(TEntity entity){ // "entity" reference can access TEntity.Id because TEntity is // at least IEntity entity.Id = Guid.NewGuid().ToString();}-

     Check all answers on Stack Overflow

     1/5

   • What is a generic library in C?

     Top Answer

     Answered May 23, 2017 · 2 votes

     a generic library is one that can be used with more than one type, e.g. more than one number type

     in c11 a generic definition can look like this:

     #define cbrt(X) _Generic((X), long double: cbrtl, \ default: cbrt, \ float: cbrtf)(X)

     in earlier versions of C one had to use just various macro trickery, e.g. as illustrated in the SO question referred to by @user1929959 in the commentary

     Check all answers on Stack Overflow

     2/5

   • What is a Generic Specification in Web Programming?

     Top Answer

     Answered Nov 26, 2015 · 1 votes

     A software specification is a text describing the developing goals and features of a software project. This text is usually written during planning phase, before any code is being written for the project. It often contains information about the software and frameworks that is being used, the software architecture, database schemas and other design decisions.

     A generic specification in particular is a software specification that does not go much in detail about the implementation, and is rather an early concept of the project.

     Check all answers on Stack Overflow

     3/5

   • What is a generic type parameter T in TypeScript?

     Top Answer

     Answered Dec 22, 2021 · 6 votes

     In this case is Type a keyword?

     In your example, Type is a generic type parameter (type variable).

     When I see just T is that the same thing?

     Assuming the token is in the same position, yes.

     By adding we are telling Typescript to assign whatever type the input is to the output?

     It's helpful for me to think about them analogous to parameters in functions, but for types. You're effectively telling typescript this:

     "I'm creating a type parameter (variable) called Type. I'm going to accept an argument in this function which will be an array, and you should use the type of each element in the array as the real type in place of Type. I'm going to return one of the array elements, so the return type of this function should be the same type as one of the array elements (or undefined if I use an index at which there's no value)."

     Now, there's one more potentially confusing part to this, based on the example that you provided, which is "Why doesn't TypeScript account for the possibility of undefined when indexing an array element using square brackets?", and that's covered in this answer.

     Here's a concrete example:

     TS Playground

     function firstElement<Type>(arr: Type[]): Type | undefined { return arr[0];}// This type is: number[]const arr1 = [1, 2, 3];// When giving `arr1` as the argument to `firstElement`,// `Type` will become `number` because each element in `arr1`// is `number`. So the result will be: number | undefinedconst result1 = firstElement(arr1);// This type is: string[]const arr2 = ['hello', 'world'];// When giving `arr2` as the argument to `firstElement`,// `Type` will become `string` because each element in `arr2`// is `string`. So the result will be: string | undefinedconst result2 = firstElement(arr2);

     Here's another example using T instead of Type for the generic type parameter:

     TS Playground

     function elementAtIndex<T>(arr: T[], index: number): T | undefined { return arr[index];}const arr = ['zero', 'one', 'two'];const zero = elementAtIndex(arr, 0); // string | undefinedconsole.log(zero); // "zero"const three = elementAtIndex(arr, 3); // string | undefinedconsole.log(three) // undefined

     FWIW, elementAtIndex in the example above is just a functional version of Array.prototype.at()

     , which should be in an upcoming release of TypeScript (probably v4.6).

     Check all answers on Stack Overflow

     4/5

   • What is a Generic Handler in asp.net and its use?

     Top Answer

     Answered Feb 25, 2010 · 8 votes

     Generic handlers are the .NET components that implement the System.Web.IHttpHandler interface. Any class that implements the IHttpHandler interface can act as a target for the incoming HTTP requests. Page is also generic handler. In general generic handlers have an extension of ASHX.

     You can find example here

     Check all answers on Stack Overflow

     5/5

   Show moreShow less

3. People also ask

   What is a generic entity?

   • An entity such as class, interface, or method that operates on a parameterized type is a generic entity. Why Generics? The Object is the superclass of all other classes, and Object reference can refer to any object. These features lack type safety. Generics add that type of safety feature.

   Generics in Java - GeeksforGeeks

   www.geeksforgeeks.org/generics-in-java/

   See all results for this question

   What is a generic type?

   • A generic type is a class or interface that is parameterized over types, meaning that a type can be assigned by performing generic type invocation, which will replace the generic type with the assigned concrete type.

   Generics: How They Work and Why They Are Important - Oracle

   www.oracle.com/technical-resources/articles/java/juneau-generics.html

   See all results for this question

   What does generics mean in Java?

   • Generics means parameterized types. The idea is to allow type (Integer, String, … etc., and user-defined types) to be a parameter to methods, classes, and interfaces. Using Generics, it is possible to create classes that work with different data types.

   Generics in Java - GeeksforGeeks

   www.geeksforgeeks.org/generics-in-java/

   See all results for this question

   What is generic programming?

   • Generic programming is about abstracting and classifying algorithms and data structures. It gets its inspiration from Knuth and not from type theory. Its goal is the incremental construction of systematic catalogs of useful, efficient and abstract algorithms and data structures. Such an undertaking is still a dream.

   Generic programming - Wikipedia

   en.wikipedia.org/wiki/Generic_programming

   See all results for this question

4. dev.to › chris_bertrand › coding-concepts---genericsCoding Concepts - Generics - DEV Community

   dev.to › chris_bertrand › coding-concepts---generics

   • Cached

   Jun 21, 2018 · Generic programming is a style of computer programming in which algorithms are written in terms of types to-be-specified-later that are then instantiated when needed for specific types provided as parameters. This approach, pioneered by ML in 1973, [1] [2] permits writing common functions or types that differ only in the set of types on which ...

5. stackoverflow.com › questions › 77632What is cool about generics, why use them? - Stack Overflow

   stackoverflow.com › questions › 77632

   • Cached

   May 26, 2020 · With generics, we can actually do away with subclassing and use parametric polymorphism instead. For example, consider a parameterised (generic) class used to calculate hash codes for any type. Instead of overriding Object.hashCode (), we would use a generic class like this: public final class Hash<A> {.

   Code sample

   class MyList<T> {

     T get(int index) { ... }

   }

   See more on stackoverflow

6. en.wikipedia.org › wiki › Generic_programmingGeneric programming - Wikipedia

   en.wikipedia.org › wiki › Generic_programming

   • Cached

   Such software entities are known as generics in Ada, C#, Delphi, Eiffel, F#, Java, Nim, Python, Go, Rust, Swift, TypeScript, and Visual Basic .NET. They are known as parametric polymorphism in ML, Scala, Julia, and Haskell. (Haskell terminology also uses the term "generic" for a related but somewhat different concept.)

7. www.geeksforgeeks.org › generics-in-javaGenerics in Java - GeeksforGeeks

   www.geeksforgeeks.org › generics-in-java

   • Cached

   • Code Reuse: We can write a method/class/interface once and use it for any type we want.
   • Type Safety: Generics make errors to appear compile time than at run time (It’s always better to know problems in your code at compile time rather than making your code fail at run time).
   • Individual Type Casting is not needed: If we do not use generics, then, in the above example, every time we retrieve data from ArrayList, we have to typecast it.
   • Generics Promotes Code Reusability: With the help of generics in Java, we can write code that will work with different types of data. For example,

8. dev.to › karenpayneoregon › gentle-introduction-toGentle introduction to Generic Repository Pattern with C#

   dev.to › karenpayneoregon › gentle-introduction-to

   • Cached

   Jan 20, 2024 · The Generic Repository pattern in C# is a design pattern that abstracts the application’s data layer, making it easier to manage data access logic across different data sources and prjects.

9. Videos

   • 

     8:49

     youtube.com

     Basic Concepts of Entity-Relationship Model

     May 27, 2021

     705.2K Views

   • 

     58:16

     youtube.com

     Database Lesson #4 of 8 - Data Modeling and the ER Model

     Jun 19, 2013

     367.2K Views

   • 

     6:10

     youtube.com

     Entity Relationship Diagram (ERD) Tutorial - Part 1

     Oct 27, 2023

     224.5K Views

   View all

10. medium.com › @shubhadeepchat › understandingUnderstanding Generics in C#. C# is a versatile and powerful ...

    medium.com › @shubhadeepchat › understanding

    • Cached

    Sep 29, 2023 · Generics are a programming construct that enables you to create classes, methods, delegates, and interfaces that work with various data types without specifying the actual type...

11. www.oracle.com › java › juneau-genericsGenerics: How They Work and Why They Are Important - Oracle

    www.oracle.com › java › juneau-generics

    • Cached

    A generic type is a class or interface that is parameterized over types, meaning that a type can be assigned by performing generic type invocation, which will replace the generic type with the assigned concrete type. The assigned type would then be used to restrict values being used within the container, which eliminates the requirement for ...