CODEWITHSUNDEEP
c#classgenericsmethodsstatic
Lee Song
Lee Song

Reputation: 621

calling method in static generic class without specifying type

Consider the following code, I want to do something like this, this doesn't work but this is what I want

class Program
{
    static void Main(string[] args)
    {
        TestClass.Test("something");
    }
}

public static class TestClass<T>
{
    public static void Test(T something) { }
}


The code below will work but I have like 20 generic methods in the same class and they are repeating their constraints over and over again.

public static class TestClass
{
    public static void Test<T>(T something) { }
}


I don't want to do this because I don't want the people who use my code specifies string as the type, because "something" is already a string

 TestClass<string>.Test("something");


To explain my question in another way round, I want to pull the same generic type and constraints from like 20 methods in the same class, I don't want them to repeat over and over, and I don't want user to specify the type when they use my methods, the parameter they pass in will supply the type.

Thanks!

Upvotes: 3

Views: 1168

Answers (2)

MakePeaceGreatAgain
MakePeaceGreatAgain

Reputation: 37000

If I understand you correctly you need this:

public static void Test<T>(T myValue) {. ..}

Then call it like this:

TestClass.Test("DoSomething");

Which will automatically infer the type string for you, you won´t need to specify it within the type-parameter.

Upvotes: 1

Jamiec
Jamiec

Reputation: 136094

If you specify the generic on the class itself, you need to specify it, as you noted in your question - this would work:

TestClass<string>.Test("something")

If you want the compiler to infer it, you need to put it on the method instead:

public static class TestClass
{
    public static void Test<T>(T something) { }
}

TestClass.Test("something");// T is infered.

Live example: http://rextester.com/VOF10456

Upvotes: 1

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