GENERICS QUESTIONS

how to check if argument is a string or int

To fix the issue you can do I have wrote a function getResult() that has only one parameter. , You can write something like this:

TAG : generics

Date : January 12 2021, 07:00 PM , By : user3100410

Registering a generic type with a generic argument in Simple Injector

seems to work fine The documentation shows examples that show how to do this.Assuming the following definitions:

TAG : generics

Date : January 02 2021, 06:48 AM , By : Sudharsan Reddy Avul

Why Kotlin's Type's vararg is treated as Array<out Type> and not Array<Type>

hop of those help? The difference is that in Java arrays are covariant, i.e. the following is valid:

TAG : generics

Date : January 02 2021, 06:48 AM , By : Jeremy Waraksa

In kotlin how to make a class that map with keys from an Enum

Does that help To construct a class which can take a generic Enum as type parameter you can do the following:

TAG : generics

Date : January 02 2021, 06:48 AM , By : Oscar

"Bidirectional" type projection / variance in Kotlin?

wish help you to fix your issue If you think about what in and out modifiers truly mean, you will soon realize having in OR out does not really make sense.Let's take a look at out first. Having does not mean that "This function accepts T and its subc

TAG : generics

Date : January 02 2021, 06:48 AM , By : ShumptonLang

How to specify the type of irrational numbers in Julia?

I hope this helps you . This was a surprise: , Note carefully that the response from

TAG : generics

Date : January 02 2021, 06:48 AM , By : Alex

(FS0193, FS1113) F# Vector class with Statically Resolved Type Parameters

around this issue SRTP errors are horrible to diagnose, and it's considered a bug that the internally generated type ID leaks into user space. It's arguably not clear with the error message, but the static members don't satisfy all constraints. If yo

TAG : generics

Date : January 02 2021, 06:48 AM , By : some nerd

What's the Kotlin generic type to capture a MutableMap and a MutableList?

With these it helps Why don't you just use the field size found both on Collection and Map?

TAG : generics

Date : January 02 2021, 06:48 AM , By : Gnob

Ada generic child instantiation claims to need itself

To fix this issue I may be misinterpreting the question, but this compiles just fine in GNAT CE 2018:

TAG : generics

Date : January 02 2021, 06:48 AM , By : p156080 Ahmad Sanan

Emulating variadic templates in Scala

Hope that helps At the moment there's no syntactical construct in Scala which allows what you're suggesting. That's also the reason why there are 22 Tuple classes (Tuple2, Tuple3, ..., Tuple22) and also different Function classes (Function0, ...).

TAG : generics

Date : January 02 2021, 06:48 AM , By : Dien Nguyen

How can I define an anonymous generic Scala function?

may help you . To summarize from that answer: No, you can't make anonymous functions generic, but you can explicitly define your function as a class that extends one of the Function0, Function1, Function2, etc.. traits and define the apply function f

TAG : generics

Date : January 02 2021, 06:48 AM , By : user3860728

What does lacking of generics mean in programming?

I hope this helps you . The "lack of generics" mentioned refers to the fact that the API exposes non-generic methods and classes, i.e. methods that work on Object and typically force the user to use casts and lose some type-safety. Generic APIs have

TAG : generics

Date : January 02 2021, 06:48 AM , By : user3857251

Require a possibly nullable generic to be not null

I hope this helps . If I understood what you want to achieve, you could change V's upper bound to something not nullable and explicitly marking it as nullable wherever needed, like this:

TAG : generics

Date : January 01 2021, 04:56 PM , By : CostinStroie

rust: expected type parameter, found struct

I think the issue was by ths following , As I understood correctly, you want to create a generic function to call ymd() for different time zones.Here is a working example of a generic function for this case:

TAG : generics

Date : December 27 2020, 04:51 PM , By : Joshua Burkhow

Why are trait bounds for Send on trait implementations ignored?

I wish did fix the issue. Have a look at this slightly modified version of your playground

TAG : generics

Date : December 25 2020, 08:30 PM , By : user3078647

Am I able to use the advantages of sealed classes using generics?

With these it helps I want to create a generic "find" method, that finds a provided entity that implements a sealed class and returns it without having to recur to polymorphism. , How about this?

TAG : generics

Date : December 25 2020, 10:30 AM , By : user3073533

Why Does a Generic Supertype Declaration Not Permit Referencing to Subtype Objects?

I hope this helps you . Pet is a supertype of Cat, but Retailer is not a supertype of Retailer. To see why imagine you added a method:

TAG : generics

Date : December 25 2020, 06:01 AM , By : ExcessNeo

Why can't `&(?Sized + Trait)` be casted to `&dyn Trait`?

wish of those help This problem can be reduced to the following simple example (thanks to turbulencetoo):

TAG : generics

Date : December 24 2020, 08:30 PM , By : user3068703

Why is ?Sized required to pass a reference to a generic type parameter?

To fix the issue you can do Most places where you use a type parameter, Rust will implicitly insert an additional Sized bound. That's because it is the most common case - if it didn't behave that way then you'd have to write the bound yourself everyw

TAG : generics

Date : December 23 2020, 05:01 AM , By : user107230

Type annotation required even when provided

To fix the issue you can do The trait doesn't mention self or Self, but it seems like you are expecting it to somehow infer which instance you intended.Suppose you had another implementation of Trait:

TAG : generics

Date : December 22 2020, 05:01 AM , By : Gazzille

How to model an interface implementation in UML that is dependent from a property?

this one helps. You model that with a constraint. This can be attached to either the class or the property itself. I can't write OCL but that would be the most formal way. However, a plain text enclosed in { braces } will do. See also https://www.uml

TAG : generics

Date : December 21 2020, 07:01 PM , By : user3055859

Kotlin - Generic Type Parameters Not Being Respected

will be helpful for those in need First, take a look at the declaration of the interface KProperty1, which is:

TAG : generics

Date : December 09 2020, 05:32 AM , By : user3050592

Vector of generic trait objects

Any of those help Generic things—does not matter whether traits, types or functions—are not code that can be addressed, but merely templates for code to be generated when you substitute them. So they are not “object-safe”, i.e. you can't use them for

TAG : generics

Date : December 06 2020, 11:48 PM , By : user3050175

How to return generic types on ProducesResponseType Swagger?

it helps some times After having a close look, it seems to be possible (and easier) with operation filters. Something along the lines of this should work (untested, just made sure it gives no compile errors).

TAG : generics

Date : November 04 2020, 03:01 PM , By : Prakash Gupta

SAM Conversion with Generics

will help you Sadly, Kotlin does not support this syntax out of the box for kotlin interfaces, only java one (whether you use generics or not). What you can do though is this :

TAG : generics

Date : October 08 2020, 05:00 AM , By : Fang Chen

How to write strongly typed generic extension function in Kotlin?

I wish this helpful for you This appears to be due to the variance on the Collection interface's parameter, which is defined as Collection.This means that Collection is a supertype of Collection, and so (apparently) the Collection.myContains() extens

TAG : generics

Date : October 07 2020, 05:00 AM , By : Destine

Kotlin - problems with "where" generic constraint

will help you Smart casts work, just not the way you expect them.To help you understand, your check:

TAG : generics

Date : October 05 2020, 12:00 PM , By : Emil

Why can I not call .values() on generic enum class?

With these it helps Because you have to call the function into the instance, not the type, to do so you have to reify the type variable:

TAG : generics

Date : October 03 2020, 10:00 PM , By : Manoj

Genric function to return List with specified type

I wish this helpful for you btw, you can use reified type parameters of inline function to not pass KClass object:

TAG : generics

Date : October 03 2020, 08:00 PM , By : GuessWork

Can you inherit from abstract class a method and change its generic type to a specific one?

I wish this helpful for you It looks like what you want is a ‘self type’. Unfortunately, this isn't available in Kotlin. (So far; there have long been discussions on adding them.)This article discusses some workarounds.

TAG : generics

Date : October 03 2020, 05:00 PM , By : Lewis

Newbie question on Ada generic package with a protected object

hop of those help? I can’t help feeling that Bounded_Buffer_Package (by the way, why add the _Package? just adds another 8 characters for the eye to skip over) could do with a bit more information hiding! The user doesn’t need to know about the types

TAG : generics

Date : October 02 2020, 02:00 PM , By : Bharat Bhat

What is the plus symbol (+) in generics?

wish of those help to @Asya Corbeau pointed me back to chapter 10, it is the Specifying Multiple Trait Bounds with the + Syntax

TAG : generics

Date : September 30 2020, 11:00 AM , By : Dogrock

Kotlin function reified parameter with parametrized return type

fixed the issue. Will look into that further Kotlin does not allow calling a generic function while specifying only a part of the type parameters. If you want to call create with explicit type parameters, you have to specify all three of them:

TAG : generics

Date : September 27 2020, 04:00 AM , By : Rooskie

Kotlin generics Checking class type with when

should help you out You can't.This is a result of type erasure: although the compiler type-checks all generics carefully, the generated code knows nothing about the type parameters, so they're not available at runtime.

TAG : generics

Date : September 25 2020, 11:00 PM , By : Brian Webster

idiomatic way of writing HashMap in kotlin

this one helps. You probably mean type aliases inline classes are still experimental.

TAG : generics

Date : September 23 2020, 11:00 AM , By : jefry saputra

Is it possible to unpack a generic tuple via pattern matching in Rust?

help you fix your problem It is possible to perform the following: , You probably want the following:

TAG : generics

Date : September 23 2020, 06:00 AM , By : gdhzkk

Optional generic parameters in Kotlin

To fix this issue You can create an extension function that handles Parents where the second type is a Unit. The function will only be available for use when the second type is a match for Unit:

TAG : generics

Date : September 20 2020, 01:00 PM , By : suchan