Add MethodInfo.MakeGenericMethod() and Type[].Where() or IEnumerable<Type>.Where()

[KasperJSdeVries]

Description

MakeGenericMethod

I need to call a generic function with a type decided at runtime, the only way to do this in c# is to use MakeGenericMethod with a type.

*.Where()

I often need a list of all methods that implement a certain interface and to do this it is very convenient to use .where instead of looping through all of the classes manually.

How to solve the problem

MakeGenericMethod()

MakeGenericMethod needs an implementation.

*.Where()

the IEnumerable interface needs a Where method

Describe alternatives you've considered

MakeGenericMethod

I believe that there are no alternatives to this function in the c# standard library

*.Where()

You can manually loop through all the items in the list and filter them that way.

Aditional context

example MakeGenericMethod use:

MethodInfo method = typeof(Sample).GetMethod(nameof(Sample.GenericMethod));
MethodInfo generic = method.MakeGenericMethod(myType);
generic.Invoke(this, null);

example *.where use:

var typesImplementingInterface = typeof(Program).Assembly.Types.GetEnumerable.Where(t => t.IsSubClassOf(IexampleInterface));

[Ellerbach]

Moving this to a discussion as it's not a bug.
Few remarks: there is not yet generics support in .NET nanoFramework.
And there is no Linq support.
Those are very small and constraints environment. Choices need to be done to fit into a very small footprint and memory.
What you describe seems to be able to be achieved with a foreach loop on the methods.

[KasperJSdeVries]

Thank you for the feedback. I will try other ways to achieve the same functionality.

[Ellerbach]

Check the Unit Test Launcher: https://github.com/nanoframework/nanoFramework.TestFramework/blob/871c6a0494cecfc53f0ead1775a402f0363afb02/source/UnitTestLauncher/Program.cs#L25

It uses attributes to find functions. Depending on what you need, it can be a good way.

Check out as well the json class, there are a lot of boxing and un boxing:
https://github.com/nanoframework/nanoFramework.Json/blob/382300aaa16c05c2f9d6415dbf97539ce08a703c/nanoFramework.Json/JsonConvert.cs#L242

it checks simple types, it checks arrays and hashtable, it check objects.