C#•16mo ago

how to get undefinied type in a <>

Kagano · 2024-09-08T19:03:22.841Z

here a example what i want like to do: ```cs Type type = ...; SyncedVariable s = new SyncedVariable (); ```

here a example what i want like to do:

Type type = ...; 
SyncedVariable<typeof(type)> s = new SyncedVariable<typeof(type)>();

Type type = ...; 
SyncedVariable<typeof(type)> s = new SyncedVariable<typeof(type)>();

Type type = ...; 
SyncedVariable<typeof(type)> s = new SyncedVariable<typeof(type)>();

Type type = ...; 
SyncedVariable<typeof(type)> s = new SyncedVariable<typeof(type)>();

333fred•9/8/24, 7:05 PM

You cannot do that at compile time

Marvin•9/8/24, 7:05 PM

You can either do that with Reflection at runtime or change the approach a little and use code generators

KaganoOP•9/8/24, 7:05 PM

yeah i want a simular resoultuion

333fred•9/8/24, 7:05 PM

You either need to make your context generic, or use runtime reflection

KaganoOP•9/8/24, 7:06 PM

i think i must store the type in a seperate variable in the SyncedVariable

Angius•9/8/24, 7:06 PM

Just FYI, C# is not Typescript and you would benefit from not treating it as such

Angius•9/8/24, 7:07 PM

Chances are it's an XY issue that can be solved with generics

Marvin•9/8/24, 7:07 PM

if you cant have the entire context generic, you have to at some point do something like this:

KaganoOP•9/8/24, 7:09 PM

have anyone a example?

Angius•9/8/24, 7:10 PM

We don't really know the wider context of what you want to do, so hard to give an example

Marvin•9/8/24, 7:10 PM

C#
Type type = typeof(A);
Type genericType = typeof(B<>).MakeGenericType(type);
object isntance = Activator.CreateInstance(genericType)!;

C#
Type type = typeof(A);
Type genericType = typeof(B<>).MakeGenericType(type);
object isntance = Activator.CreateInstance(genericType)!;

very ugly

Angius•9/8/24, 7:11 PM

public void Foo<T>()
{
    Blah<T> s = new Blah<T>();
}

public void Foo<T>()
{
    Blah<T> s = new Blah<T>();
}

would be ideal

Angius•9/8/24, 7:11 PM

Or make it a generic class or w/e

Marvin•9/8/24, 7:11 PM

i approve of trying to get the entire context generic

Marvin•9/8/24, 7:12 PM

generally reflection is the last option u want to use

Angius•9/8/24, 7:12 PM

Marvin•9/8/24, 7:13 PM

if you explain more in what context you want to use it, we could maybe give you more tips