使用泛型清理代码

Question

I am somewhat new to Generics and I came across this issue, I have repetitive code that I am trying to clean up. The signature is different but the code being executed is the same, is there a way to pass in a generic type instead of having to specify each type in a new signature?

public JsonResult<JsonData> GetServiceData(Func<IServiceResponse<IEnumerable<Order>>> func)
{
    var response = func();
    var jsonDataContainer = Mapper.Map<JsonData>(response);

    var result = GetJsonResult(jsonDataContainer);

    return result;
}

public JsonResult<JsonData> GetServiceData(Func<IServiceResponse<List<int>>> func)
{
    var response = func();
    var jsonDataContainer = Mapper.Map<JsonData>(response);

    var result = GetJsonResult(jsonDataContainer);

    return result;
}

public JsonResult<JsonData> GetServiceData(Func<IServiceResponse<User>> func)
{
    var response = func();
    var jsonDataContainer = Mapper.Map<JsonData>(response);

    var result = GetJsonResult(jsonDataContainer);

    return result;
}

Answer 1

It's hard to answer this question definitively, because you haven't specified the signature of Mapper.Map .

But, if Mapper.Map can take an IServiceResponse<T> of any type T , then this would work.

public JsonResult<JsonData> GetServiceData<T>(Func<IServiceResponse<T>> func)
{
    IServiceResponse<T> response = func();
    var jsonDataContainer = Mapper.Map<JsonData>(response);

    var result = GetJsonResult(jsonDataContainer);

    return result;
}